Exmortis has been mentioned earlier on in the thread (on page #2).
http://www.giveawayoftheday.com/forums/topic/3903/page/2#post-46828
The prequel and the sequel are also online.
Exmortis (3 Episodes)
Description: A browser game with a horror theme which enfolds in a post-apocalyptic setting.
Note: The game is not suitable for kids.
Exmortis , Browser Game:
http://www.fizzy.com/games/exmortis
Exmortis 2 , Browser Game:
http://www.fizzy.com/games/exmortis_2
Exmortis 3 , Game Demo & Commercial Version (92 Mb):
http://www.fizzy.com/games/exmortis_3
King's Island (4 Episodes)
Description: A browser point-&-click Action-RPG.
King's Island.
http://www.ageofgames.net/en/games/kings-island-series/kings-island-1.html
King's Island 2:
http://www.ageofgames.net/en/games/kings-island-series/kings-island-2.html
King's Island 3:
http://www.ageofgames.net/en/games/kings-island-series/kings-island-3.html
King's Island - Kaptivo's Rage:
http://www.ageofgames.net/en/games/kings-island-series/ki-1-kaptivos-rage.html
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[Resources Accessed: July 2013].