| Online upgrade Games |
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 Eternal Flow Game
 
Plays: 5784
Category: Action Games
Adventure through the depths of the abyss with your evolution ship! Take on swarms of enemies and collect treasure as you fight. Unlock modifications that completely alter the way the game is played, and play mini games to earn even more resources! Upgrade your ship, your bombs, your crew and even your enemies; Customize everything! |  Penguin tower defense Game
Plays: 5769
Category: Action Games
Kill al dangerous penguins which have invaded your territory. Use towers to destroy wave after wave. Dont forget to upgrade your towers for more destroy power. |
 Parasite X Game
Plays: 5764
Category: Action Games
Your a parasite. You like to eat blood cells. The hosts body is trying to kill you. survive as long as you can. in this intense game its a fight for survival, use everything you can from upgrades to chemical ombs to stop those bloodcells from getting past you and sending antibodies in.
You can download the game here for your site:
http://download.krazyletter.com/games/parasitex.zip |  Space Saga Game
Plays: 5746
Category: Action Games
This is a comprehensive, encompassing flash game that contains neatly detailed world and twisted storyline. There are two modes: "Campaign" and "Survival". Fire at your enemies and gather bonuses, buy new weapons and upgrade it. |
 Kick Ass PLUS! Game
Plays: 5742
Category: Action Games
"Kick Ass, Plus!" is the latest game developed by Sunsum&Vox. It is based on the traditional "Rock,Paper,Scissors" with magic wand and bombs involved. The Plus version allows the user to upgrade different types of skills as well as buying tools which brings more fun into the game.
The graphic design is another highlight of the game. From mysterious Egypt to Japanese Zen yard, in such a pleasant environment, the user will challenge a cocky rabbit with "Rock, Paper,Scissors". |  Panic Killing - Zombie Attack Game
Plays: 5707
Category: Action Games
Play zombie games that consist of 23 levels with much zombies,bloods,weapons,upgrade,items and variative gameplays.
You can also download and play this zombie games without ads version and play it offline or even redistribute it on your own server. |
 CrazyTopy Game
Plays: 5658
Category: Adventure Games
Little Topy is an inventor, he likes fast riding! But his world has many obstacles on the road that is why Topy equipped his vehicle with the gun, which helps him to solve road riddles.
On Topy’s way there are many traps and surprises and additional tasks, which can bring him money to upgrade his vehicle. |  Claustrophobia - The Maze Game Game
Plays: 5624
Category: Puzzles Games
Escape from the shrinking maze. Avoid walls. Pick up coins to upgrade. Pick up bombs to blow up the walls. Freeze and back the walls. |
 Fade Game
Plays: 5613
Category: Action Games
The game has 2 game modes. First one is some kind of “story mode”. You are to upgrade your skills and get achievements.
Another mode is locked until you get a certain achievement. After that you can play a really bright and colorful game. This time your goal is to run as far as possible.
Please, do not skip the intro. It’s really brief. |  HeliAssult Redux Game
Plays: 5598
Category: Action Games
A revision of the Chopper game where you fly through a battlefield chasing a specified target within a time limit. Each level you can upgrade your craft with your bounty |
 Space Pirates TD Game
Plays: 5592
Category: Action Games
Space Pirates is a tower defense kind of game. Pirates space ships attack you and your mission is to kill all of them by placing towers which you can upgrade and make more efficient in shooting. There are fake 3D effect which makes it even more interesting and cool. |  Planet Basher Game
Plays: 5588
Category: Action Games
Your country needs YOU! Save the world by taking to the skies and bringing back as much stardust as you can carry. You are a pioneer, paving the way so that others may succeed in your wake. Do not disappoint them. Upgrade, collect, then upgrade again. Do whatever it takes. Just do it quickly.
The best of the best can do it in under 8 rounds. Some say it's even possible to do it in 5. Can you? |
 Evil Shot Game
Plays: 5587
Category: Shooting Games
Stay alive as long as you can and earn as much money as possible to see how you rank among other survivors. Shoot and kill the zombies to earn money. Earn enough money to upgrade your gun. Zombies dire from one headshot or multiple shots to their body. |  Retro Mania Game
Plays: 5568
Category: Shooting Games
A retro shooter which you have to destroy the oncoming enemies, collect powerups to upgrade your ship. |
 Condemned World TD Game
Plays: 5561
Category: Strategy Games
The world is under attack from the most gruesome monsters hell has to offer! Build & upgrade your towers, equip them with gems for different effects and try to keep the world safe! |  Boost up your car with Harry's Game
Plays: 5553
Category: Adventure Games
Help Harry customize old cars of girls to get cool cars.
In the game, unusual, interesting cars are used. High-quality graphics, interesting gameplay. |
 Starius Game
Plays: 5540
Category: Shooting Games
Starius is a shoot em up games. You can upgrade your ship by catching many bonus |  Treasure Seas Inc Game
Plays: 5539
Category: Action Games
Upgrade your submarine and hunt for treasure! |
 Sparks of War Game
Plays: 5534
Category: Strategy Games
Tower defence game! Game consists of variety of attack and support towers. Upgrade towers and combine with support towers to achieve maximum firepower. Your job is to prevent enemies from passing through your assigned path to defend. Kill enemies, gain rewards and defend your country like a hero! |  Iron Serpent: Defense Game
Plays: 5508
Category: Strategy Games
Tower defense game, about expedition on other planet.
Scientists finded there very aggressive monsters, that want to destroy your base. You must defend it! |
