Cuscoz

The game is a rogue-LITE with excellent run and gun mechanics, interesting and variable bosses, hand drawn art and fairly tight gameplay. If you enjoy these types of games this is a no brainer. The length is also fairly decent and the game does things well to mix things up between runs (every "world" has variations on its end boss). Once you complete a world a few times, you have a choice of starting from the second world, so progression can be a bit easier if you want. One downside is I'm not a huge fan of the character design and the puppetry based animation is not my favorite. Otherwise this game is quite excellent and a lot of fun (it also has online and offline co-op).

A very nice game for both beginners and more experienced players. Has a rogue-lite element of progression in campaign mode, and also the classic arcade mode. The graphics are excellent and the gameplay is quite good, in terms of stages and boss variety. It also supports TATE mode. For around $10 this game is a no brainer. A couple of downsides is the music is just OK, and there are places where the translation is a bit iffy (Chinese dev). Also during the tutorial and in reading sections in general, it just goes by too fast so you can't actually read fast enough.