A big level, the secret lab is a level by itself. You are instructed to destroy this enemy complex but there is a rumor that their notorious secret lab is hidden here so you cross your fingers and enter the complex. May God help you to find this lab and destroy it.
Sprawling techbase exploration focused dungeon crawl with mostly low intensity combat (though there are a few set piece battles). This map was finished in 2007, but I hadn't released it because it was supposed to be part of a mini-episode that was never finished.
Prayers of Armageddon is a Doom II megawad created by Santtu Pesonen (MFG38). It includes 32 new maps and a hidden bonus map which is only accessible via using cheats. All the levels for the megawad were created entirely by Pesonen.
There was also a remake titled Prayers of Armageddon: Retaliation, and it was released in 2014.
Hanging Gardens is a single-level PK3 for Doom II and the GZDoom source port that came out in August 2011. It was designed by Paul DeBruyne (skillsaw) and uses a music track from Epic Pinball. It's set in a lush, walled garden in the middle of a desert.
The player controls a gun turret on a watchtower in the Robot Drop Zone. Robots circle the tower and shoot seekers at the player in an attempt to deplete their damage gauge. Both the robots and the seekers must be destroyed, but ammo is not infinite and must be used with care. When the player's ammo is completely spent, it's only a matter of time before game over. In a phase where a certain number of robots must be destroyed, the player is just a sitting duck; however, in a survival phase, it is possible to advance to the next stage if the player has enough health, then they can can wait out the time limit.
Godless Night is a GZDoom episode with the Supercharge gameplay mod built in. It features very light hub elements, loads of (mostly subtle) Castlevania inspiration, and plenty of secrets to find - especially for challenge-enthusiasts.
The Call of Duty: World at War Map Pack 1 expands the addictive COD multiplayer experience with four new maps. Players fight through the burning streets of Berlin in “Nightfire” and take up battle positions in fortified Japanese bunkers in "Knee Deep." “Station” offers a bombed out underground train station, and the Nazi Zombies return in “Verrückt” (Zombie Asylum) featuring more weapons, new Perks-a-Cola machines and electroshock defenses.
200 Line Massacre: The Slaughtering is a megawad (full 32 maps + 4 bonus) by @Arsinikk and @NinjaDelphox with the goal of making Vanilla slaughter-like maps under 200 lines. It is the sequel to 100 Line Massacre and also features additional mapping by @scwiba and @finnks13.