If you never played VVVVVV, I'd recommend that one. It's a cool retro-style platformer.
You can get it here: https://github.com/jamesofarrell/VVVVVV/releases/
You'll need the data.zip file, which you can get here (legally): https://thelettervsixtim.es/makeandplay/ Just download one of the files and extract it from inside. Then you'll need to put it on your Pocket where it says in the first link. I had to create that folder, but it worked after that. I have the v2, so I don't know how well this will run on the v1, but worth a shot.