The introduction to this weekend download has been stolen by a ninja and replaced with a depressed bubble. Sorry for the inconvenience. If you happen to see a ninja, please attempt to stop him and ask for this paragraph back. That would be very much appreciated.

Ninjah (Windows, 2.6MB, free) - With gameplay remarkably similar to the recently reviewed Neon Maze, this takes the gameplay element of not being able to touch things that are a different colour to yourself and applies it not to maze-like-strategy, but to the deft stylings of ninja ability. Either jump, grapple or — using the power of a machine gun — launch your way through the host of included levels before indulging the oh-so user friendly level editor.

Though some levels will become trial and error, depending on your ability to recognize the often different colour changes. This small quibble is dwarfed by the games level design - each being just a single screen and scalable with a combination of your three given methods of movement - which is truly impressive and contained within such a small download. But, basically, its a stealthy, colour matching, action platformer with ninjas! What's not to like?

Plobb! (Windows mirror) (Mac/Win, 6.7MB, free) - This overly-colourful arena shooter plays like a mix between the classic arcade game Asteroids and a cheap disco. Trek towards the enemy bubbles and spit at them to deflate them. As their size reduces, they split into increasingly smaller bubbles until they pop completely or drop a pickup. The key to success in this game is: Unhaltingly, unceasingly, risk your life and blobby limbs to get as many pick-ups as possible. They are all good and some are much more impressive than others - just be weary of Old Man Time, who ticks away before turning the bubbles around you into instant toxic death.

Ten Ton Ninja (Windows, 19MB, free) - Did you know it's awesome to be a ninja? You use a grappling hook to flip and swing your way throughout the sky, snagging magical gems, raking up killer combos, and killing enemies with the fantastic power of your vast buttocks. Sort of like if Spider-Man wasn't a whiner, and hung out with cooler heroes. Man, Tom Cruise needs to make a movie about ninja instead of samurai. There's a level editor in addition to the 22 levels that come with the game, so you can create and download your own. The gameplay is simple, but can get pretty frenetic.