This trainer has been made for Nimbus. ( http://store.steampowered.com/app/50000 )
It has been tested on v1.0 but it will probably work with new versions too.
Tested with Update 1 too, all options are working.

Trainer download link:
Nimbus +2 trainer
Nimbus +3 trainer (Added a new gravity cheat. Read the instructions.)

First run the trainer.
Then run the game. (You can start the game with it's own icon or You can use the Start game button in the trainer.)
Hit key 1-2 on the numerical keyboard to turn options on/off. Make sure that NumLock is active.
You can also use the checkboxes to enable/disable the options.

There are 2 options in this trainer:

1. No gravity for Your ship
2. Unlimited Lives

NOTES:

No gravity for Your ship: If this option is turned on, gravity is not affecting Your ship at all.
Keep in mind that if You go down, Your ship will not accelerate since there is no gravity, so turn this option on
when You already have some speed or when You can launch Yourself from a cannon.
If this option is not working for You, it is probably because of PhysX version problems. Hopefully it will work.

Unlimited Lives: This will give You unlimited lives on all difficulty levels.

You can send Your comments and bugreports to Ezt a címet a spamrobotok ellen védjük. Engedélyezze a Javascript használatát, hogy megtekinthesse.

Some information about virus reports for trainers generally. Read it before You post something about some virus.
http://szemelyesintegracio.hu/cheats/41-game-hacking-articles/212-trainers-and-anti-vir-softwares