GlowStone is a game by NS3K, made using Game Maker, which features quality graphics and OST.
The game basically runs around on a beat-em-up sidescroller kind of mechanic, and it features a good handful of characters to choose from, each with their own unique design and functions.
The game is currently still in development, but an alpha demo is out to the public for testing and for enjoyment.
There's not much I can say for this game, seeing as how I haven't gotten to play it yet, but from what I have seen and heard, it is an amazing game filled to the brim with potential.
There also appears to be a heavy combo system, and switching between characters mid-combat, allowing for team combos, which can be very devastating, and a well made EXP system, with exp bonuses for combos.
Beware of the EXP penalties, though.
Videos
The Alpha currently has an entire chapter done, in which you explore a base of sorts.
Edit: Added links to the creator's other projects that were found elsewhere.
