Releasing a tower defense game these days is a risky proposition. If it's well made enough or brings a new spin on the genre to the table, it will grab fans of TD games and new players alike, but if it's just the same old TD game we've seen hundreds of times before, the market is significantly smaller. 4 Towers: Onslaught is the latest release in the 4 Towers series by Lamnda Mu, and it differs itself enough from the standard tower defense formula to warrant some interest.

The first thing players will notice is that unlike most TD games, you can't place your towers where ever you wish. Towers can only be placed on the available platforms in each level. Some of these platforms are linked, and will create a special tower depending on the two towers in question. Towers can be upgraded two times, and can be recycled for full price in case any creeps get past you and you need to build a tower further up to take care of them. This system is quite intuitive, and gives the player a lot of lee-way but allowing the game to be paused while these decisions are being made deflates some of the game's tension.

The game sports a unique visual style and atmosphere. The creeps for the most part look like vague shapes with some of the slower ones sporting decent design, but the boss creatures of each level are varied and interesting to behold. Each boss has a percentage chance to drop certain upgrades which can be equipped for tower bonuses. These upgrades can also be purchased with biomatter which is acquired by playing levels, but can also be purchased if a players wishes for a quick advantage.

If you enjoy tower defense games, 4 Towers Onslaught will keep you busy for a while. Not only are there heaps of levels, but for those who don't wish to spend money there is a lot of re-playability in grinding old levels for loot drops (as there are pages of upgrades to collect). This is definitely worth a look for those looking for another tower defense fix.