Build Free Online Games - Play over 40,000 games online including online games , internet games , flash games , and all your own free games.
  Quarterback Palooza A Free Online Game
Chimera IX A Free Online Game
Chimera IX
Christmas Tree Demolition A Free Online Game
Christmas Tree Demolition
Graviton X2 A Free Online Game
Graviton X2
Sol Defender A Free Online Game
Sol Defender
Extreme Planet Defense A Free Online Game
Extreme Planet Defense
Alien invasion A Free Online Game
Alien invasion

Online Observation Games
Sherlock Holmes Part 1 Game

Plays: 52291
Category: Puzzles Games
Part I of The Curse of Anan-Thotep. Use your keen sense of observation to find the eleven differences in the following images. If you get stuck, select the pipe for a hint. For a closer look, select the magnifying glass icon in the lower left.
Lionel Messi Find The Numbers Game

Plays: 12576
Category: Puzzles Games
Test your observation skills in this finding numbers game with Lionel Messi! 20 numbers are lost in this image and you must find them as quick you can. For each number found you are getting scored, but avoi bad clicks because your score will be affected!
Lili y las diferencias Game

Plays: 11832
Category: Education Games
Baby Lily is a smart girl, and practice every day with games like this, to develop their visual and observation skills. Try to find the differences between the two drawings that offers baby Lili. Please click on the differences you find in the photo with the red frame.
Sniper For Hire: Trollday Game

Plays: 7238
Category: Action Games
Trolls are everywhere and you need to snip them down. Use your observation and sniping skills to take them out.
Watch Paint DRY Game

Plays: 7152
Category: Adventure Games
Take the ultimate Paint Drying Observation test in this Game Changer* which will test your patience to the very limits of plausibility ! This is GT50 in the KBsGameToilet game-idea-a-day project. Sign up and push it's followers into DOUBLE FIGURES ! *you will end up changing to another game.
My Shapes Game

Plays: 6936
Category: Puzzles Games
Click, swap, line up but play tactical to get through the levels in time! This puzzle game calls upon your sense of observation, your capacity of anticipation but also your quickness of mind.
Prehistoric Mahjong Game

Plays: 6633
Category: BoardGame Games
Prehistoric Mahjong is a new mahjong variation by Free-Online-World.com. Feel the anxious atmosphere of the catastrophe of the end of dino period. This time is the golden age of dinosaurs. Our mahjong game requires your skill, experience, memory and observation.
Chalk Period Mahjong Game

Plays: 5793
Category: BoardGame Games
New colorful free addictive online mahjong game from Game-Mahjong.com. Feel the anxious atmosphere of the catastrophe of the end of chalk period. This is just the golden age of huge pangolins, reptiles and dinosaurs. This mahjong game requires your skill, experience, memory and observation. Click at the identical tiles with two opened adjacent sides. Delete all tiles on the playing board to pass to another level.
Hidden Alphabet Dragon Game

Plays: 5732
Category: Puzzles Games
Analyze your power of observation by finding out the letters. For each accurate click, score will get increased and for wrong click, score will get reduced.
Dense Forest - Spot the Numbers Game

Plays: 5410
Category: Action Games
Analyze your power of observation by finding out the numbers which are hidden in the picture. For each accurate click, score will get increased and for wrong click, score will get reduced. Use Mouse to interact.
Special Agent Bunnet versus Doctor Dishwater Game

Plays: 4985
Category: Puzzles Games
Special Agent Bunnet answers an urgent call from the Chief of Police - only he has the lack of sense necessary to get up at four in the morning and drive around deactivating slime bombs placed throughout the city by Doctor Dishwater.
Cute Boys Room HIDDEN OBJECTS Game

Plays: 4546
Category: Adventure Games
Analyze your power of observation by finding out the hidden objects. For each accurate click, score will get increased and for wrong click, score will get reduced.
Unusual suspects x Game

Plays: 4538
Category: Puzzles Games
Traditional memory game with a sci-fi theme. Test your memory and observation skills with this fun matching game.
Butterfly Match Game

Plays: 4533
Category: Puzzles Games
This is a different kind of clear game. Click on the open to butterfly wings games challenge your observation. The more game, the more you score!
Sweet Home Hidden Objects Game

Plays: 4238
Category: Customize Games
Test your observation skill by locating the hidden objects in this sweet home. Locate all the hidden objects displayed on the header bar and you move onto the next level. You got limited time to find the hidden objects wrong guess will lead to loss of time. Be careful in finding the objects.
Kiz - Totemaku Game

Plays: 4177
Category: BoardGame Games
This ancient and elegant Nunan token game requires skill, patience and observation. Can you defeat all four of KizPlanet’s Totemaku masters?
Chinese Butterfly Game

Plays: 3990
Category: BoardGame Games
This is a different kind of “CLEAR” game. The game challenge your observation. Hope enjoy it:]
Shy of the season Game

Plays: 3890
Category: Puzzles Games
This game is exclusively developed to test your power of observation in finding the difference. Find the possible differences in right picture. Try to find the difference before time ends.
cooking hall hidden object Game

Plays: 3873
Category: Puzzles Games
Analyze your power of observation by finding out the hidden objects. For each accurate click, score will get increased and for wrong click, score will get reduced.
Living Room hidden object Game

Plays: 3846
Category: Adventure Games
Analyze your power of observation by finding out the hidden objects. For each accurate click, score will get increased and for wrong click, score will get reduced.

1 | 2 | 3 | Next Page >>>

Tips: Setting the opponent movement speed to zero can give you a platform for you to do your own animation instead the opponent graphic. You could make an opponent popup and then hide again using animation instead of the built in movement.