Akka Arrh is one niche game: to enjoy it, you not only need to enjoy old school arcade shooters, you also need to enjoy Llamasoft's specific brand of psychedelic weirdness too. If all of that appeals to you, then it's pretty fun.

Akka Arrh is a resurrected version of a game that never existed. And if you don't know the lore, it's ok. It's colorful chaotic nature will keep you at bay for a few hours. You can get those high scores, and win, but it won't be easy. If you want that Atari pain, this is a little less hurtful than usual, but mastering it will still take a while.