Madballs in Babo:Invasion turns its characters into armed spheres that roll through maze-like arenas. You and up to three friends can tackle campaign levels online, or carry your unlocked fighters into competitive matches for as many as sixteen players. The game also lets you play a whole campaign in Enduro mode, so a group can settle in for a longer run instead of choosing one mission at a time.
A campaign built around movement and firepower
The campaign follows a war between two groups on the Babo world. You choose a side, then roll through a set of ten maze-like levels where enemies, environmental hazards, switches and paths shape each encounter. The camera sits above and behind your character, but you can switch to a top-down view if you prefer a clearer map-like angle. You steer and aim separately, which makes moving through a corridor while tracking a target feel closer to an arena shooter than a run-and-gun platformer.
Your character never walks. It gathers speed as it rolls, and that momentum is part of how you cross a room, dodge a projectile or line up the next shot. Different characters handle differently: a heavier fighter can carry large weapons without being pushed back as much, while a lighter one turns quickly but may recoil when firing. Some classes can fly, some move in short bursts, and others survive punishment or support nearby allies. Those differences are easy to see when you are moving through the same fight together: one friend can hover over a gap while another stays on the floor, or a support character can create a healing field as enemies close in.
Weapons are plentiful and often have alternate firing modes. Machine guns and rockets cover familiar ground, while energy, heat and cold weapons give you different ways to deal with enemies that resist one kind of damage. Grenades and thrown explosives can clear a cluster or force you to move before a crowded room gets worse. Characters also have special abilities with separate functions: a speed burst can get you out of a tight spot, a defensive move can disrupt an enemy, and a healing ability can help a teammate stay in the fight. The effects are practical and immediate, so you can tell why a friend’s choice matters without a long equipment screen.
The campaign does not ask you to clear every room before you can advance. You can shoot your way through enemies, use the layout to get around them, or look for switches and collectibles as you go. Levels can hide terminals with short bits of story, containers holding supplies, and score multipliers dropped by defeated enemies. A route can narrow around a bridge or open onto a larger arena; later spaces add more hazards and enemy combinations. The changing scenery moves from jungle-like ground to temples, industrial interiors and other strange environments, keeping the action from looking like one long corridor.
At certain points you can change character at a device in the level. That makes a campaign encounter a small problem-solving exercise as well as a shooting gallery: you may need a quicker fighter to cross a hazard, a heavier one for a tougher opponent, or a support ability when the group is taking too much damage. Enemy weaknesses also encourage swapping weapons instead of holding the trigger with the first gun you find. A good hit can drop health, score multipliers or a throwable, which gives you a reason to keep fighting rather than simply searching for the exit.
Four players can share a full run
The PC game supports two to four players in online co-op. You can invite friends into an individual campaign level or choose Enduro to play the campaign as a continuous run. Enduro changes the shape of a session: instead of treating a mission as a quick visit, you follow the full series of levels together and keep moving through its different layouts and fights. If your group wants to test a character or revisit one difficult stretch, selecting a single level gives you a shorter way in.
Co-op keeps the campaign’s combat and movement intact. You and your friends roll through the same spaces, aim at the same waves of enemies, trigger switches, cross hazards and look for supplies. The combination of classes and weapons creates room for different approaches, but the game does not lock players into strict team roles. You can all bring damage-heavy fighters, or one of you can trade some firepower for an ability that heals or disrupts enemies. That flexibility is useful when your group is learning the controls or when someone wants to swap characters after a difficult encounter.
Because the action happens from an elevated camera, friends can see much of the room at once. The view helps with spotting enemies and paths, though walls and overhead structures can hide your sphere for a moment. The alternative top-down camera reduces some of that clutter. A wider view also makes it easier to understand where teammates are, but not every attack is obvious in the middle of explosions and colored effects. Expect a busy screen when several people are firing at once.
There is no verified PC couch co-op or split-screen mode. Plan to play online, with each friend on a separate computer and game copy. The PC listing advertises online co-op and cross-platform multiplayer between PC and Mac. That cross-play option has an important practical catch: Steam marks the game incompatible with macOS Catalina or newer. For a group using current Macs, check compatibility before building a session around cross-play. On Windows, the listed system requirements are very modest by current standards, and the game needs only a small amount of disk space; Steam’s current client requires Windows 10 or later even though the game’s own legacy requirements list older Windows versions. Controller support is partial, so a keyboard and mouse are also a reasonable way to play.
Invasion makes the map part of the match
When you want a different kind of group session, the competitive modes put players against one another. The game supports up to sixteen players online across its multiplayer modes, with free-for-all and team fights alongside Capture the Flag and Invasion. Team play gives you a reason to stay near a partner, while the free-for-all mode is a fast scramble where everyone is trying to be the last ball standing. These matches use the same weapons and character abilities as the campaign, so time spent unlocking equipment has a direct connection to multiplayer choices.
Invasion is the mode built around changing the battlefield. Before a match, the two teams take turns placing terrain pieces to make their halves of a map. Each side also positions power nodes and a base. Once the match begins, you move into the opposing area and fight over those nodes; controlling enough of them lowers the other team’s base defenses so it can be attacked. The tiles make it possible to shape routes and cover before anyone fires a shot, while the base objective gives the match a shared direction beyond individual kills. The layout is rebuilt between games, so a familiar weapon set meets a changed route each time.
That planning phase is a sharp contrast with the movement once combat starts. A team might make a winding route that slows attackers or leave a more direct line toward a node. After the countdown, those choices matter only if you can also roll through the enemy fire and keep control of the map. The mode combines quick aiming with a small amount of map design, which gives friends a reason to discuss the layout as well as trade shots. It remains competitive play, though; Invasion is not another campaign mission where all players share the same side.
The rest of the versus set gives you shorter goals. Capture the Flag puts teams on opposite sides of the map, while Skirmish modes focus on eliminating opponents. The larger arenas give fast characters room to cover ground, and heavier fighters can hold a narrow passage with a less easily displaced weapon. Special attacks can change a close encounter quickly, whether a character jumps out of danger, knocks an opponent off course or grows large enough to crush nearby foes. It can feel hectic, but the control scheme stays consistent from campaign to versus: roll, aim, choose a weapon and use an ability when the opening appears.
Progression gives you reasons to return
The game tracks campaign secrets and unlocks, including characters, weapons and abilities. You can take alternate routes, look behind the obvious path and revisit a level if you missed something the first time. The two factions share a parallel campaign structure but give you different characters and weapons to use, so replaying with the other side changes the tools in your hands more than the basic objective. Unlocks also carry into multiplayer, giving both the campaign and online matches a connection to your growing roster.
That system is more about trying new combinations than building a long-term character. A different Madball changes your movement and special ability, while a different weapon changes how you respond to enemy types or open space. You can experiment with the five broad archetypes—Assault, Heavy, Runner, Flyer and Support—and find a character whose handling suits the room. Support has a clearer team use, but none of the campaign levels require you to follow a rigid class plan. The game leaves space for friends to switch roles as their preferred characters unlock.
The campaign and versus modes also reward different kinds of replay. A repeated level gives you a chance to collect something you missed or improve a score, while a new Invasion layout changes where the teams can move. The game includes more than twenty arena maps for multiplayer and several campaign environments; between those fixed arenas and the map-building rules, a group has more variety than the same deathmatch layout on repeat. It is still a compact action game with a defined campaign, rather than a progression-heavy shooter built around a constant stream of new missions.
A lively old shooter is easiest to plan with friends
Madballs in Babo:Invasion has a deliberately ridiculous surface: wide-eyed spheres carry oversized weapons, explode into bright splashes and toss off short quips during a firefight. Underneath that, the combat pays attention to momentum, weapon handling and enemy resistance. You can roll through a room at speed, find a new gun in the middle of a fight and change tactics when a heavier foe shrugs off your current attack. The tone stays colorful even when a level becomes crowded with hazards and explosives.
A few practical limits come with that design. Walls and overhead structures can hide your sphere, and the mix of enemy waves, tight spaces and switches can become repetitive if you expect each level to bring a completely new objective. Difficulty can also jump sharply in some encounters. The rhythm stays focused on short stretches of action, a few route or equipment decisions, then another fight, so the game fits best when that loop sounds appealing to your group.
Online play is officially supported, including co-op and cross-play, but public matchmaking is quiet. Player reports over the years regularly mention difficulty finding public matches, so treat this as a game for a group that has arranged to meet rather than one where matchmaking is likely to fill the lobby for you. One of you can host a match, and Steam also lists a separate dedicated-server tool, but the easiest route for a few friends is to agree on a time and connect directly. If your group wants a compact online campaign with a strange cast and a more tactical side mode, Madballs offers a particular mix: campaign levels for a shared fight, plus versus arenas where the teams can redesign the battlefield. The online-only setup and quiet public lobbies make it a better fit for friends who can coordinate their session and platform compatibility in advance. Four players is the co-op ceiling; the sixteen-player number belongs to competitive multiplayer, not the campaign.