13 Easter Eggs were found for "Event Horizon":

Item	Title	Rating
Event Horizon	Reference to Old Hardware	6.0 with 1 votes
Soldier	Surprising What Some People Throw Away	7.7 with 14 votes
Harvest Moon: Friends of Mineral Town	Double all profits made in one day.	9.5 with 2 votes
Powerpuff Girls: The Mane Event	Pencil Test	4.0 with 2 votes
Heroes of Might and Magic II	The Personal Touch	7.0 with 29 votes
Tomb Raider 3 Gold- The Lost Artifact	The Real Nessie?!	7.0 with 2 votes
Windows CE	Calender	3.0 with 6 votes
Riding Star	Zebra Horse	7.2 with 33 votes
Home On The Range	Hidden Mickey	4.5 with 22 votes
Strongbad_email.exe Disk 1	The Cheat's Lightswitch Rave	5.0 with 1 votes
Half-Life 2	Hidden G-man	3.3 with 15 votes
US Navy Fighters	Make Your Co-Pilot Puke	8.8 with 36 votes
Super Smash Bros. Melee	Unlock Characters (not an egg)	6.5 with 71 votes