Serious Sam: Double D: XXL is a shoot 'em up side-scrolling shooter video game developed by Mommy's Best Games and published by Devolver Digital. The game is part of the Serious Sam indie series and an improved version of Serious Sam: Double D.
- Beetle (Boss)
- Beheaded Bomber
- Beheaded Firecracker
- Beheaded Kamikaze
- Beheaded Rocketeer
- Chimputee Battle Master (Boss)
- Double Diva (Boss)
- Female Bio-mechanoid (Boss)
- Giant Flea
- Lava Golem
- Major Bio-mechanoid
- Marsh Hopper
- Mental's Pet Hamster (Boss)
- Minor Bio-mechanoid
- Torcher Kitty
- 0-4377 Flamethrower
- 12 Gauge Shotgun
- Insane-brand Chainsaw
- LM32 Rocket Launcher
- MadDog Grenade Launcher
- Thompson submachine gun
- Type II Machine Pistol
- XL4 Lasergun
Serious Sam: Double D: XXL functions much like its predecessor. It is 2D and features the same Serious Sam-inspired gameplay that its predecessor has. Gunstacking is also included. However, there are several large differences. First, the game supports local co-op for two players. The second player can drop in at any time by hitting the A button. Secondly, the second player will control Huff, the character from the Serious Sam: Double D trailer.
Guns can be upgraded in two ways; ammo or a plain upgrade. Ammo simply increases how much ammo the player can hold. There are several ammo upgrades, but they must be purchased at once. The second upgrade, the plain upgrade, vastly changes how a gun works. For example, the 12 Gauge Shotgun can be upgraded to the Cybernetic Bee, which fires bees that lift enemies in the air and harm them. Upgrades must be purchased with money, which is obtained by killing enemies.
Several new enemies have also been added to the game. Completely new enemies are in, such as the Torcher Kitty, which is a cat in a floating jar of green liquid that spews fireballs from its mouth. In addition, several cannon-fodder enemy types, such as the Beheaded Rocketeer, will have armor in some parts of the game in order to make them more challenging.
Finally, several of the game's levels have been reworked to accommodate the new weapon upgrades and co-op. It is unknown how much has been changed.
The levels in XXL are identical to the original version with the exception of the addition of several race-type levels, where Sam pilots vehicles to kill enemies for money while avoiding track obstacles. Each act has an additional vehicle stage:
- Act 1: Rocket board (vehicle: jet propelled snowboard)
- Act 2: Dinofighter (vehicle: rocket launching dinosaur)
- Act 3: Lunicycle (vehicle: dynamite powered unicycle)
In these additional stages Sam loses the use of his weapons and gains control of a vehicle to move through the level. There are no additional secret areas, just stashes of money for upgrades.
Note: XXL adds small silver stashes that contain health and armour upgrades located in secret areas and scattered around. These upgrades increase the limit on your health and armour to 200 each when all collected. Once collected they will reappear on subsequent playthroughs but will not provide an upgrade. The chainsaw is the easiest method to opening these.
After being confirmed by Mommy's Best games, Serious Sam: Double D: XXL came to the PC as an upgrade to Serious Sam: Double D sometime after the Xbox 360 version was released.
The PC version on Steam will automatically download and upgrade itself, and when starting the game players are given the option of the 2011 original version or the 2013 XXL version.
Serious Sam: Double D: XXL contains both single player and local co-op. Local co-op can be played in the campaign levels and the challenge levels.
- Serious Sam: Double D: XXL at Mommy's Best Games