Viki Vans was recommended by BoostApps reader Kadarius.  The game seems to be a take off on Tomb Raider. The vendor describes it as:

"An action game set in the Xyber Mech World. A society entangled in a net of lies and deceit. Shackled by cuffs of mental and moral slavery. Chocked by oppression and awaiting a cure. Only the truth can set it free.

Become Viki Vans, a warrior in search of the truth and freedom. Guide her though the ruins of a deserted city and its complicated system of underground tunnels towards the secret archives of the Dominium. Infiltrate the complex unseen to find the truth which will shake the civilization. Make the Dominium regret they ever wronged you."

Keys:
4,6, left, right - move
2 - jump, pull up, climb ladder, hide in a niche
8 - crouch, climb down a ladder or hang off a ledge, come out of a niche
5, Call - OK, select, hold to throw grenade, use a terminal or elevator
# - pause, 5 or call to resume
* - select weapon

Bugs: The only way to exit the help screen seems to be to kill the game with the red key. Occasionally the game seems to temporarily freeze.

Type: Ad-Supported
Vendor: Gameleons/GreyStripe
Data Connection Required: Yes
Supported iDEN phones: All Falcon Series (i776, i465, i9, i290, etc.)