is a pure, unadulterated nostalgia trip for anyone who spent their late nights in 2010 playing Counter-Strike: Source Zombie Mod or Garry’s Mod Zombie Survival. It resurrects the exact panic-inducing gameplay loop of defending a barricaded room with a handful of survivors while the zombie horde grows exponentially.

Case Opening Simulator takes the absolute most addictive part of Counter-Strike—unboxing rare loot—and turns it into a full-blown multiplayer progression game. If you love watching virtual roulettes spin, chasing ultra-rare gold drops, and building an absurdly expensive virtual inventory, this mode will completely consume your free time.

Tile Swap takes the classic match-3 concept (think Candy Crush) and fuses it with the raw, addictive progression of an idle/clicker game. It is the exact type of game you boot up "just for five minutes," only to realize you have missed dinner entirely.

Look, I know what you’re thinking. "Why am I opening up a next-gen Source 2 engine platform just to click a flat JPEG of a pizza?" Honestly... because it’s weirdly fun. It's a super straight-forward, classic Cookie Clicker clone, but it’s polished, simple, and the ultimate way to completely waste your time.

Honestly, TTT is the main reason a lot of us spent thousands of hours in Garry's Mod back in the day, and seeing it running in s&box on the Source 2 engine feels like a breath of fresh air. The core paranoia, the screaming at your friends, and the accidental teamkills are all here, but it just runs and looks so much better.

If you love incremental progression systems and games like Melvor Idle or RuneScape, Idlemirr is a very compelling addition to the s&box ecosystem. It shifts away from the platform's usual action-heavy modes to offer a deep, text-based progression RPG where your time investment directly translates to seeing numbers go up.

Recommended: YES 👍If you are looking for a relaxing but deeply rewarding progression loop inside s&box, Chop the Forest is an absolute gem. It takes the core fun of classic lumberjack clicker-tycoons and breathes life into it using a great art style and smooth progression

Recommended: YES 👍If you spent your teenage years building chaotic prop fortresses in Garry's Mod, Fortwars in s&box will feel like coming home—just with a much-needed modern upgrade. It perfectly captures the nostalgic, creative spirit of the original GMod gamemode while utilizing the power of the Source 2 engine to make it smoother, faster, and incredibly addictive.

If you downloaded s&box and were wondering where all the fun went, it’s right here. Protect the House is easily one of the best game modes on the platform right now. It takes the basic wave defense formula, drops it into a sandbox, and injects it with pure, unadulterated chaos.My buddy and I spent an hour crafting the "perfect" defense layout, only for a slightly faster-than-average zombie to walk right past our turrets and beat us to death with a metaphorical pool noodle. 10/10 experience

Unironically spent three hours straight just cutting grass.I downloaded this platform expecting to test out massive shooter mods or sandbox maps, but I've ended up completely hooked on the lawn mower simulator. There is something incredibly satisfying about watching the grass mesh instantly change textures right as your blades pass over it. The mower physics handle surprisingly well without feeling too arcade-like, and watching the completion percentage hit 100% is pure dopamine. It runs super smoothly even when you're chewing through dense fields. If you need a game mode to just chill out and put some music on in the background, this is absolutely it.