
WARNING: The game contains loud noises, subtle screen shaking, and quiet ambience. If you feel overrun with any of these features then feel free to close the game and change computer volume, take a break, or play something else. The game was not tested with headphones in mind.
There are:
-2 worlds
-20 levels (10 per world)
-A bunch of playable towers
-A bunch of world specific SCP enemies
-Bosses
-Secret mechanics
-Bunnies
-And more to be discovered by playing the game
SCP: Overrun is a challenging game. It's likely that you will fail to secure the shelter due to a lack of knowledge or by simply being overrun. Replaying sections of the game is intended and being respectful to NPCs is... encouraged for your sake.
There's also lore but, like many other aspects of the game, it is meant to be discovered firsthand.
The game is, of course, free and built with accessibility in mind which means that there is very little stopping you from playing the game right now.