Please add Old School RuneScape to your recording list. Outplayed could track the valuable drop/loots we get from monsters, or whenever we kill someone (PvP) or whenever we die. Or at least add the game for us to manually record the game.

Capture some quake moments

starve together and Don't starve together

Don't Starve is supported but not DST

Sometimes fighting bosses with friends leads to some epic moments so being able to save those would be great.

It's an early-access horror game, which can be played in solo or in multiplayer.

pls

Although it is in closed beta, its very popular and when it comes to open beta, it will have a very big player base

It's a game full of possibilities to eliminate your rivals, with beautiful graphics and it would be nice to record gameplays of it, such as elimination scheme tutorials, item location, teaching some missions.

Adding Rain world would be nice as there are some moments i wish i could rewatch within my own experience.