Alexander Barnfield and Jakub Majewski
1
Freeware
Unknown Enemy is a fan made add-on for Wing Commander: Secret Ops.
Falco Software Company
8
Freeware
After working for decades in the special forces, I retired.
38
Splash Damage Ltd.
1,430
Commercial
Quake Wars is a Quake game that is played very much like Battlefield.
Firaxis Games
432
Commercial
XCOM: Enemy Within is the expansion of the strategy game XCOM: Enemy Unknown.
2
OpenXcom Developers
153
Open source
It is an open-source clone of the original UFO: Enemy Unknown game.
1
LucasArts
10
Commercial
Star Wars The Clone Wars Republic Heroes allows fans to play the clone wars.
Boomzap Inc
19
Shareware
You can test your wits as you navigate through lush forests and villages.
6
Mario City Games
44
Freeware
Psycho Waluigi Mario uses the power of eye to destroy everything.
1
Firaxis Games
773
Commercial
XCOM 2 is the sequel to XCOM: Enemy Unknown, strategy game.
Long War Studios
49
Freeware
Long War is a free mod for the 2012 game XCOM: Enemy Unknown.
1
xehonk
7
Freeware
It is an overhead view shooter in which you are caught in an unknown enemy base.
MyPlayCity, Inc.
40
Freeware
Set the town free from an unknown enemy in this first person shooter.
Falco Software Company
8
Freeware
Peaceful lands are invaded by an unknown enemy.
40
Falco Software Company
4
Freeware
The commander, our ships, met a new unknown enemy in the galaxy.
Falco Software Company
Freeware
An unknown enemy turned everyone who was on the space station into cyborg zombies.
HypeTrain Digital
11
Commercial
Clone employees and send them into perilous situations to probe enemy weaknesses.
