A fluid enemy instead of marching units
Creeper World: Anniversary Edition is a top-down strategy game where the threat is not a line of soldiers but a spreading mass of fluid that covers the ground. The creeper flows across the map and squeezes your base from every direction, so the fight is about terrain and pressure rather than about holding a choke point against individual enemies. You build up on the high ground and push back the mass with your units. The game runs in real time but can be paused, which lets you stop and think through a bad situation before committing to a plan.
How a group plays it
The game is tagged as singleplayer, so a group's usual session is taking turns or watching one player work through a mission while others offer advice. Steam lists Remote Play Together, which lets friends join in from their own machines through one person's copy. Beyond that, the store text does not describe any co-op or versus modes, so treat it as a game one person drives at a time.
What to know before starting
This is the original Creeper World rebuilt for Steam with updated unit graphics and higher-resolution background images. The design keeps the same ratio of strategic depth to complexity, meaning the systems are deep but the rules stay approachable. Expect to lose ground, restart a mission, and try a different build order. The real-time play with pause is the tool for that: pause, read the map, place your structures, then let it run.