I recently was introduced to a game called voar. It seems like a fairly recently creation, so I decided that given how much I liked it there'd probably be some overlap on bay12, especially given our attachment to kerbal space program and the like. There's no thread here yet, so I decided to make it myself.
The basic concept is simple. You have a spaceship. It is highlighted in green. Left clicking increases your speed. Generally, you want to orbit the planet as long as possible to build up points. The current leader is highlighted in red, with their name at the top of the screen, making for a situation much like Mario Kart where everyone wants you dead if you're the leader. Oh right, did I mention you can die? Crashing into other players or objects kills you. Going too fast is likely to send you to the edge of the map, which also kills you. Luckily respawning is instant so there's no real loss other than score. There are essentially two types of players. People that want to smash into the leader as often as possible and ruin everyone's day(leader kills are tracked), and those that actually want to be the leader.
The closer you are to the planet, the more points you gain over time. Inner orbits can be dangerous though, given that new players spawn there and it can get crowded very quickly. Also, every now and then, hazards spawn that are guaranteed to kill almost everyone on the map(you can survive, but it takes a great deal of both luck and skill), giving new players a chance. Also, the game is entirely free, which is nice. There's no account system either, though that means it doesn't really keep track of any of your accomplishments, at least not yet. Development is still kinda in progress.
Interested? It can be found here.
voar.ioClicking boosts you in the direction your ship is facing. Going up really fast isn't likely to give you a good orbit.
It is easy to get to higher orbits, but hard to get back down, as you have to wait for gravity. Consider carefully how far out you want to be, because you'll be stuck there for awhile.
Players get an indicator when they're locked onto the leader, but the leader isn't notified. Its okay to be paranoid as the leader.
Asteroids are more dangerous than they seem at first glance. Try and predict their heading. I probably die more to asteroids as leader than anything else.
The line in front of you is your projected flight path. The leader's path is also shown to you. If your flight path starts bending heavily in weird directions, there's probably a hazard inbound. Good luck.
Be prepared for amusing/terrible player names, as you can choose your nickname. It is a game on the internet, so such a thing is inevitable.
I'll probably try and update this first post periodically if the game updates, as well as maybe improve the title/wording.