I've unlocked Hard mode, and every object and enemy destroyed leaves a parting gift projectile, making it a nightmare with the Lock-On weapon.

Also there's "Round" shot that fires opposite where you move and is unwieldy to use, and "Classic" which is the little underpowered fighter from the original Space Invaders.

I've also found at least 11 Extra Stages, one of which is a Tag-Team Boss Rush. Three waves of two bosses each. Ouch!

I've also found three sets of BGM Sound Tests, some SFX tests, and 4 of 15 Enemy gallery items that name the ships.

All in all, fun game I'm still playing. Got to try the music generated levels though. Got some interesting music.

Thanks for responding! Yes, this problem still persists for me. Everytime I "redownload" Space Invaders Infinity Gene, after a short session of playing the game, the volume slider in my iphone 3G S' (running 3.0 and up) gets impossible to control. It got to a point where I had to (in a sacrificial, ceremonial fugue) delete this beloved game so as to avoid constantly restarting my iphone everytime I wanted to use the native ipod player following a kickass session with infinity gene. I've been in a perpetual Tolstoyian existential slump of depression ever since. I miss you, Infinity Gene. Oh how I wanted to evolve, infinitely … and shoot stuff … infinitely of course …

By the way and FYI … Infinity Gene isn't the only game-app that causes this phenomenon. Sadly, the fun 99-center app, Minigore, is also followed by the shizophrenic, palsied volume slider's conniption fit, as though the volume slider were boycotting "fun AppStore games, just because I can". I draw some comfort that I'm not the only one … this might be a software-update-worthy fix (hopefully not the hardware–I'm so lazy … having to take this thing to the Genius Bar for THIS problem is a bit borderline-overkill).

Anybody facing this issue, let me know if you've come across any fixes. Thanks!

*HINT ALERT*
Extra Level 5 [X-05] : Leading Strand is a HUGE cash cow. You will get an evolution almost everytime you complete it. Now alot of you will be like what are you talking about, i cant get that many points at once. Sure you can. Just use the wave setting. Set it to wave and for the first part, just avoid the bullets coming out of the stop sign shaped things and get those bonuses man! Then when you get to the part with all the hectagons coming at you and back up all the way, and position yourself in the middle. Let go of the ipod, and if you got enough bonuses you will destroy almost every single hectagon. Then all you have to worry about is the boss at the end, which is probably one of the easiest bosses in the game.
*HINT OVER*

Also one spoiler for a super hard game…

When you get enough evolutions you will get the hard mode for the game. Now try it out. Hard right. Now get a lot more of evolutions with the Xtra stage cheat thing i listed above. You'll get a new weapon, called Classic. Thats right. You get to play with the original single shot space invaders gun. It stays single shot too, no matter how many times you hit a UFO. Try that for extreme play.

*END RANT*

Great game

Can someone confirm this?

Yes, I'm having this issue too, I have an iPod Touch 2G running 3.0 I can't seem to find out why this is happening either, but it always seems to happen after I play Space Invaders, very annoying… I hope there is a fix for this soon! The mystery continues…

I've had that exact same problem too and had no idea what was causing it.. come to think about it it DID happen the same day I bought this AWESOME game!

Hope it gets fixed soon..

Then again I am on 3.10 beta 3 – maybe its that – 50/50 as to which it is then…

Just wanted to gather some feedback from anyone that might've come across this same technical issue (with this game). first, let me just say, I love this game.

anyway … Everytime I load this game, play it, and exit out of it, when I go to my ipod player (the native ipod player in my iphone 3gS [3.0]), the volume slider below any song I play gets "jumpy" and "rickety", as though the silver slider-button were trying to escape my thumb. The only remedy that fixes this dilemma is to restart the iphone. However, any time I play Infinity Gene, the volume slider in the ipod gets a little schizophrenic. Now, the reason I suspect this all has to do with Infinity Gene is because I tested out every other game app I have in my iphone, and none of them lead to this problem. But when I play Infinity Gene, it occurs immediately after … I know this all anecdotal, of course, and not anything resembling hard "evidence" …

If anyone's experienced this, let me know … educate me …

If I'm forced to come up with a complaint, I'd wish for more levels in the main progression. The random, music-generated levels are cool, but not enough. Although I'm still unlocking ("evolving") things as I'm replaying on Hard…

If you like shooters at all, you will find this easily worth $5.