i swore ive played something exactly like that before except it was "noobs" and you could build walls for defence and it had like 50 waves and bosses and everything
The game finishes and starts over when 20 waves are completed. The different types of guests come in basic infantries, upgraded 2.0s, Self Delete bombers, hammers, archers, armored elites, and ninjas. Each 10th wave has a boss known as Guest 1337.
After each wave is completed, you and the others get to decide whether if you can hire helper bots, or repair and/or upgrade the core. I got a bit greedy with my money, so I went for weapons and armor.
Does it draw a parallel to that place you mentioned?