This game pisses me off...
The controls lagged which kept sending my into random directions, the gravity seemed to randomly choose whether to work or not, and quite a few times I was a single pixel away from landing when the oxygen ran out... It has the possibility of being a very addicting game, but not as it is now...
Terrible gravity
There should be some notable way to tell which planets have high gravity, and which have barely any. Size, spin speed, colour, art style, giant glowing circles, background "air" colour. Anything. But no, to me, it seems completely random.
Also, ship upgrades would be amazing. Like, boosts to save me from falling into the abyss, landing rope to pull me towards planets, extra oxygen surplies, science upgrades for; Sun-slowing black holes, space-station creation, re-fuel stations, and nukes to blow up planets I was just on (Would give a speed boost and slow the sun down).
Power-ups for speed, slowing the sun, generating new planets (Slow travelling asteroids?), more oxygen or extra tools.
It would all be fun.
I've not completed the game, so I don't know if this is already implented or not;
Levels. End each level with a "Space warm" into the next solar system, and you can basically restart from level one but with all your upgrades and new planets, yeah?
And something that is much needed. Custom Spaceships. I'd love to be able to make my rocket pink.
ARRRGGGG!!!
This game could be alot better. The controls are so bad that i push the button and the game waits about 10 seconds to actually shoot! But it is kinda fun when it works but that lag just makes me hate it
gets better as you progress
I'm rather... on the fence about this game. on one hand, it is a real challenge to get a few of the challenges as 'complete', and there is a lot left up to the player to choose what ship to use, and each has their own benefits and disadvantages, such as the military ship. a smaller amount of O2 is good in situations when you're veering off into space, but it can be a real bitch if you're trying to get the leap of faith award. as such, it is good you have added the 'golden oldie'. This is a good challenge, and not so difficult as to seem impossible to surmount, which adds more game time, and brings a sense of immense satisfaction once you achieve it.
Slingshotting, although risky, is rather simple to use once you have the knack of it, and can be immensely rewarding if there are planets that are close, and in your way when trying to escape the sun. However, this is the only time your physics work to the players advantage.
The physics of the game are satisfactory, for the most part, but the gravitational fields is all over the place. As Mysterious-Pig said, Gravity's effect is rather steep. to put in a better word, after reaching a certain point, it becomes ineffectual, and almost non-existent. to accurately simulate gravity, it would be better if the equation for gravity were more... quadratic. E.G. where G = gravity, D = distance from the planet, and M = Mass: G= M/D. therefore, as you get farther from the planet, it's gravitational effect decreases, not rapidly, but noticeably. note: this might not be entirely perfect, so I wouldn't put EXACTLY that into it, maybe a multiplier here, a division there, if you've payed ay attention in your algebra or quadratics classes, this should be a breeze. You might also want to play Gravitee, Gravitee, and Gravitee wars, just to get a good feel of what gravity should do in a game.
The graphics of the game are decent, better than a lot of games on here, but it still seems as though you put it together with basic shapes in Microsoft Word, or another program that uses those same shapes. The colours aren't too harsh on the eyes, and they aren't too bland either. on this note, you have done a good job.
To the last point, hinted at by the title: replay value. As you start, you would expect it to be similar to Gravitee, or even the popular Worms, so getting a grip on the apparent lack of gravity can be a little frustrating at best, destructive at worst. You will find, as you progress, that slingshotting becomes like second nature, skipping is normal, and overall gameplay becomes kind of... natural.
Overall, a five. hampered by the unrealistic physics, and bolstered by the exceptional replay value. Suggestions: review your physics engine, and maybe study your physics a little more, and don't forget the quadratics.
MISSING THINGS!
I agree with Legian299, one of the biggest problems was that if you missed, you would have to wait way too long to re-spawn, and the sun would have caught up! There needs to be a self-destruct button that will allow you to re-spawn faster.