Pico-8 (or one of its knock-offs like Tic-80) is a great choice for just concentrating on making something. Built-in gfx, map, and audio editors: 8x8px sprites.

Pico-8 (or one of its knock-offs like Tic-80) is a great choice for just concentrating on making something. Built-in gfx, map, and audio editors: 8x8px sprites. Very limiting, but very fun. I prototype everything in Pico-8 now.