I mostly use python and pygame to quickly create small games for game jams. My favorite creation is Flyre and it is the most advanced and polished game I have ever made. I'm very proud of it, so check it out !
This is my personal collection of free asset packs that I find amazing. I used, want to or planed to use each of them in games I made. Those are high quality assets that I recommend looking at before creating a game.