I just published a new game called TONRA, an UCN-inspired max mode game where you have to survive 3 minutes while defending against various enemies! (atm there are 15) The goal? Try to get as much score as possible. I'm still updating this game, so there will be more enemies as time goes on, balance changes, and mechanics.
This game heavily relies on mouse movement (as the name suggests) where you definitely need speed, memory, knowledge, and passion if you really want to beat them all.
This One Night Requires Aim by Windyways
This image shows off a few of the enemies in the game, like The Stalker (at the window), which kills you if you keep the light on as it walks by, The Spikeball, that just simply kills you if your mouse hovers over it, The Spider that kills you if it reaches to the desk, The Moth that you need to guide to the light to make it go away, The Snail that you have to regularly click to change its direction, The Pudding where you have to feed it a carrot, The Smudge that just blocks everything underneath, and more that are not in this image!
This video perfectly shows the difficulty of this game (which is quite much), and how much practice it takes to learn and memorize all 15 enemies. I'm still very happy reaching this achievement, and hopefully when I add more enemies, I can do that too!
There is a Prestige mechanic if 15/20 is too easy for you, which just increases the enemies AI beyond the maximum. It's not balanced, but just in case you want a challenge.