By request. here's Devil Hunter X. Fight rampaging devils in this platform style game with nice graphics.  Very slow and doesn't fit the screen on the i776, i465, i290 and similar models. Should work well on the i9 and i856.

Keys:
2, 4, 6, 8 = Up, left, Right, Down
5 = OK, Select, Fight

Type: Freeware
Vendor: Corefan Ltd
Data Connection Required: No
Supported iDEN phones: Falcon Series (MIDP-2 - i856 or  i9 recommended, very slow on others)
File Size: 221 KB

Astral's an RPG inspired platform game with dark, detailed graphics, 8 types of enemies and 9 levels

Plot: The ancient evil wants to come back to human world. The Power Crystals, which were protected by the four Goddess of Light, were supposed to detain the evil Molasar. But Molasar's Confessors captured the Light Goddesses and the crystals were scattered about and are protected by guards.

Defeat the guards, collect the Power Crystals and place them in the Slots of Destiny. After placing the sixth crystal run to the doors, which take you to the next level. In the last level you must battle Molasar himself.

Keys.
0 - Pause, resume, next screen in descriptions, continue through intro.
Arrows - move your character
5 - Shoot, pick up crystals, use carts, activate switches
8 - Throw the Pentagram
1, 3 - Fast Pentagram throwing

Type: Ad-Supported
Vendor: Akson
Data Connection Required: Yes
Supported iDEN phones: All with Falcon Series (MIDP 2) with Java.  Best with 128px wide screens  (i290, i335, i425, i455 i465, i776, etc.)
File Size: 158 KB

Mad Cow Martha has broken her leg and has to stay in the hospital. She is bored and wants to get back to her friends. It is up to you to help Martha to get out of hospital. You do not control Martha directly. You job is to control parts of the surroundings, by opening doors, remove obstacles and finding pain killers to keep Martha going.

As Martha makes her nad dash through the hospital, arrows numbered 2, 4, 6 or 9 flash on the screen.  To help Martha you have to quickly press the corresponding arrow key (the number keys don't work) before the on-screen arrow disapears

The game has 21 levels, working sound and adapts to all screen sizes.

Keys:
Call = OK, Select
Up, Down, Left, Right = Remove obstacles when prompted

Type: Ad-Supported
Vendor: baby-soft Product Page
Data Connection Required: Yes
Supported iDEN phones: All with Falcon Series (MIDP 2) with Java (i290, i335, i465, i776, i856, i9, etc.)
File Size: 109 KB

A very challenging platform style action game. You guide a mutant entity through 25 levels. Everything that moves is a enemy and if you hit the bottom of a platform you die. The entity can change it's shape between: ball, square, triangle, slime and flying behavior. Each shape has different abilities and the available shapes change with each level. The game adapts to all screen sizes.

Keys:
Call = OK, Select
Arrows = Move left, right, up down
* = Pause, Resume
# = Change shape

Type: Freeware
Vendor: Manokone Software
Data Connection Required: No
Supported iDEN phones: All with Falcon Series (MIDP 2) with Java (i290, i335, i465, i776, i856, i9, etc.)
File Size: 48 KB

Publisher's description: "There is another mission for the little brave Dragon!

Dracula is back, he plans to conquer the whole world! You'll have to outsmart evil monsters and defeat Dracula in the final battle. Don’t forget to collect gifts and eat some food!

Many dangers will be on your way. The first opponent you will encounter is a zombie. This creature is not only blind but extremely stupid as well.

The knight is a much tougher opponent. Capable of seeing you even with his back, he will immediately rush toward you when he notices you, trying to hit you with his sword.

Watch out! The bats are your first aerial opponents and you will certainly going through many near-death experiences with these flying beasts.

But none of these enemies come even close with Dracula. This monster can spit and hit you, turn into a bat and teleport himself.

Features: 3 types of deadly enemies. Great cartoon animation and graphics. 3 different dragon upgrades. The larger you are the deadly you are! End-of-game Dragon vs. Dracula fight."

This game has responsive gameplay and working sound and vibration.  There are some minor key mapping issues that are easy to work around.

Keys:
Call Key, 5 = OK, Select
Right Softkey = Execute the Left Softkey's action
Menu Key = Execute the Right Softkey's action
Right, 6 = Move Forward, Left, 4 = Move Back
Up, 2 = Jump

Type: Ad-Supported
Vendor: HeroCraft - Product Page
Data Connection Required: Yes
Supported iDEN phones: All Falcon Series with Java (i290, i335, i465, i776, i86, i9, etc)
File Size: 135 KB

Author's description: "You are a 40ft tall, angry Gorilla. Your objectives: Cause some mayhem, destroy some buildings, and eat some soldiers!

Instructions: Use the arrow keys to move left or right, up to jump. Hold the up key to jump and grab onto the side of a building. Once on the side of a building, up and down will climb the building. Press away from the building to jump off.

Punch buildings to damage them. Soldiers will appear, and if they are caught in the collateral damage, they will be destroyed. Punch soldiers directly to eat them. This will give you an extra 5% health. Once all buildings are destroyed, you can move on to the next zone."

Keys:
Up - Jump,
Hold Up key to climb buildings. When climbing press away from building to jump off it
Left, Right - move
Call - Punch

Type: Freeware
Vendor:  ZenDog - Product Page
Data Connection Required: No
Supported iDEN phones: All With Java
File Size: 43 KB

In this sequel to the popular Dynamo Kid "Mario" style game  you have to save the Dream Islands from evil dino's who are trying to destroy the peaceful world. 16  levels and 4 different worlds.

Keys:
4- left. 6 - right
2 -jump, 5, OK, select
8 - Enter hidden bonus rooms

Type: Ad-Supported
Vendor: Studio Orange Pixel Product Page
Data Connection Required: Yes
Supported iDEN phones: All Falcon Series with Java (i776, i465, i9, i290, etc.)
File Size: 92 KB

Discovered by BooostApps user Lise, Dynamo Kid is a Mario style platform game. The Dynamo Kid's quest is to find the magic stars and rescue the happy fuzzy creatures of Dreamland from the evil monster Moopie.

Keys:
4- left. 6 - right
2 -jump, 5, OK, select

Type: Ad-Supported
Vendor: Studio Orange Pixel Product Page
Data Connection Required: Yes
Supported iDEN phones: All Falcon Series (i776, i465, i9, i290, etc.)

BoostApps reader Lise has been scouring GetJar looking games and apps that work on her i856. Mario55, also called Mario MIDP is one of her finds. It's an oldie but a goodie, a Super Mario Bros. clone from Hungarian development house AquaJava.  It has working sound, correctly mapped keys and very fast gameplay on my i776.

Keys:
left and right arrow keys to run
up arrow to jump
# to start a new game after you loose.

Here's the full (ad-supported) version of Akira Hero that some of you have been asking for.  I never got past the first level in the demo so I don't know exactly what features the ads enable,  probably more levels.

Akira Hero is a platform style adventure game where you jump and climb your way though a complex and beautifully draw world. You encounter many enemies who will kill you unless you get them first by jumping on their heads.

Keys:
Use * and # for the left and right soft keys
Use the Call key for the OK button
Use 4 and 5 to move left and right
Use 1, 2 and 3 to jump

Type: Demo
Author: Orange Pixel/GameJump - Product Page
Data Connection Required: Yes
Supported iDEN phones: All Falcon Series (i776, i465, i9, i290, etc.)