aeTIos, one step at a time, my friend. Genesis is fully written and designed to be portable.
Upping the base CPU ups the actual CPU, so it's okay. Otherwise, it says danger immediately lol.

commodore 64 is a bit of a challenge because it's out of my comfort zone hardware wise, but I'll do it after Genesis if I deem it possible for me.

There are a couple of Picross games already:

http://www.ticalc.org/archives/files/fileinfo/95/9545.html
http://www.ticalc.org/archives/files/fileinfo/390/39099.html

An AI Chatbot for Nspire already exists.

Someone's probably already suggested this, but...

Fruit Ninja for Nspire with touchpad support.

Emulators of non-z80 machines on a z80 calc are tricky with such a low clock frequency. The MSX and MSX2 are both z80 machines. They are like the home-computer equivalent of the pc as there are many versions by different manufacturers with different specs, but they are mostly compatible. My msx1 has 80k or ram I think,but not all games use all of that.

One idea I had a long while ago and that I remembered this evening was not a game, but rather a text string converting tool that would run through a BASIC program then optimize every string of text so that whenever possible and smaller, letters get replaced by tokens, so that for example, in the string "Answer", instead of A followed by 2-byte large individual lowercase letters, it would become Ans followed by the remaining lowercase letters.

The downside of such converter is that people who have language apps installed would need to disable their hooks before using the BASIC program so that the text doesn't look messed up (for example, Answer with the Français app installed would become Repwer), but some people might prefer to do everything possible to keep their game size minimal .

Yeah that and it would maybe have guides to make it easier to distinguish what was changed. It would definitively speed things up since looking at each possible matchups one by one makes it easy to miss stuff.

I guess a web-app would be fine (providing an offline version is also available in case it goes down *looks at Aichi's sprite/map editor*)