I think you're being a little harsh on the Gel-Arshie game and Algebros. For a start, the Gel-Arshie game is DELIBRATELY terrible. The fact that it's terrible is rather plot-significant, even. It's a parody of rushed and cheap licenced games, like Algebros is a parody of educational games. I found Algebros quite fun, but I don't tend to touch the minigames much, and algebra was always my favourite part of maths lessons.
Also, I'd rank Space Circus Catastrophe above the Limozeen game, which I found annoying and hard to handle. xD