可以和朋友在线一起玩的免费开玩（Underground）游戏共 7 款，包括新盗墓笔记（官方正版）、Otherworld Legends和Cave Crawlers。
全部游戏: 7
Officially licensed by Nan Pai San Shu, this authentic tomb-raiding MMO brings the novel’s world to life. Venture into the Seven-Star Lu Palace, Nine-Headed Cypress, Bronze Gate and more—iconic locations recreated in stunning detail.
A "blood-pumping, face-bashing" roguelike brawler. Master heroes of your choice, craft uniquely broken builds, and hack & pummel through a myriad of dungeons in a thrilling rampage.
Cave Crawlers is a 1-10 player rogue lite set deep underground in a system of randomly generated caves. Players use weapons, spells, and talents to defeat the unique bosses and enemies found in each biome.
A classic-style hardcore dynamic shooter which takes place in a science underground center.
A short sandbox rpg game that takes place on a square planet. Explore the world, gather resources, build a home and become stronger.
Unleash your inner fighter in Rainbowcore Hypernova, the explosively fun and free fighting game featuring vibrant characters, easy controls, and dynamic battles
Hexagon Knockout is a multiplayer bumper car game where the objective is to knock out your opponents. You control a vehicle capable of firing rockets using its cannon at the rear. Play all the different game modes, offline as well as online.