I can happily say that UBERMOSH is one of the most entertaining games I have played in a while. In this game, your objective is to survive in a mosh pit for 1 minute and 30 seconds, using your laser sword to reflect the enemies' bullets back into them, making up for a great defense mechanism, and to eventually pick up their guns and start your own carnage in the pit.
The retro art style is lovely and really matches the game's theme while the soundtrack is amazingly energizing, fueling your space killing-sprees. There are several arenas in which you can fight ( randomly chosen by the game when you start a new run), but the only difference between them is the colour of the environment. Your arsenal is not really big but it is varied and has lots of uses: besides your sword, you can equip up to 5 (aproximate number) guns that are dropped by the endless incoming waves of enemies, each having different fire modes ranging from a shotgun to a single charged shot or a flurry of bullets widespread in a cone of fire.
The game comes with 4 combat modes: the ordinary one, in which you have 3 lives and can use your sword and any gun you pick up; the "kensai" mode, in which you cannot pick up any firearms, relying only on your sword and starting the run with 6 lives; the "gunner" mode, in which you have no sword but any gun you pick up fires in a full-auto mode; or "warlock", in which you start with the best gun in the game and can use your sword, but you get only 2 lives.
If you're looking forward to a greater challenge than what the base game has to offer, hardboiled mode is here to satisfy your needs, representing a much difficult twist on the base game that resets your overall score when you switch to it.
You can also get trading cards and easy-to-obtain achievements when playing the game, which adds to the value and makes the price worth it. In my opinion, UBERMOSH will not let you down if you're looking for a good time-killer or just for some good old top down shooting action, and I would strongly suggest buying it.

TL;DR: With a difficulty level that reminisces good old arcade games, UBERMOSH brings some new elements to the retro top down shooter template, and it will get you a decent 2 or 3 hours of fun for a really good price.

Very simple gameplay but still super fun and is dirty cheap.
Sure it doesn't have a lot of variation, there is no power ups, different guns and whatnot, but for its price tag it's definitely worth it.

If you want to get a preview of the gameplay check this short video:

https://youtu.be/ZXwlR88_sgk

LOVE THIS GAME, AMO ESTE JUEGO, ICH LIEBE DIESES VIDEOSPIEL, NAPENDA MCHEZO HUU WA VIDEO, ΛΑΤΡΕΥΩ ΑΥΤΟ ΤΟ ΒΙΝΤΕΟ ΠΑΙΧΝΙΔΙ, J'ADORE CE JEU VIDÉO. JUST BUY IT AND GET ADDICTED TO IT