Recurrent villain in which game series?
Cracked by: badideabear, yaksha, jowens, shrik, Ananth, Sumanth Patlolla, Siddarth Pai, rickde, rohanquizzer, Manish Achuth, s m muneer ali, Gaurav, Bipin Banavalikar, raklodramA, Rogi, username, Shwetha Maiya, Dibyo, Thejas V R, Bharath, Rahulk, Swarun, vishwanath and Amarendra
Spider mastermind from the DOOM series
Super question from %gqh% shrik. Thanks saar!
Connect
2a. 
2b. 
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quoting username
Simple enough - identify the event. Many clues in the image.
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The 3 winners of the 2011 Google Science Fair. The cups seem to be a tribute to/design by Lego - one of the other organizations involved!
Recent pictures. Question is, from where?
Cracked by: Urthstripe, shrik, jowens, Ananth, raklodramA, username, Rahulk, Thejas V R, Bharath, Sumanth Patlolla, Amarendra, Swarun, rickde, Bipin Banavalikar, Rogi, Dibyo, yaksha and Shwetha Maiya
The photographs are from Joyland - a World of Warcraft + StarCraft themed adventure park in China.
Connect. We’re looking for the name of an organization.
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The European Space Agency’s (ESA) so-called cornerstone missions - respectively named after Gaia, Max Planck, Rosetta and William Herschel
What’s going on here? Give us the name of the ’event’, please.
Cracked by: Urthstripe, Rogi, Ananth, username, Manish Achuth, KK, jowens, raklodramA, Bipin Banavalikar, Jayaprakash B R, rickde, dineshk, shrik, Thejas V R, Rahulk, Sumanth Patlolla, rohanquizzer, Debasish, Mridul, Amarendra and Bharath
Pac-manhattan - a ‘real life’ enactment of Pac-Man on the streets of New York.
This question comes in from %gqh% shrik. Tumba Thanksu Saa!
Who are these guys?
Cracked by: grey_matters, Sumanth Patlolla, Anonymous, username, Anjul, jowens, shrey, raklodramA, dineshk, Raghuvansh, sandeep bhat, Bipin Banavalikar, rickde, Dibyo, Ananth, rohanquizzer, shrik, Rogi, Rahulk, Thejas V R, KK, Swarun, Manish Achuth, Bharath-TK, Bharath, Amarendra and Shwetha Maiya
Doom development team – John Carmack et al.
If you were doing something according to any of the below “styles”, what would you be doing?
The list is not exhaustive and 2 is just a hint.
Cracked by: dineshk, shrey, Ananth, shrik, Sumanth Patlolla, username, Rogi, Raghuvansh, jowens, raklodramA, Rahulk, Thejas V R, Bharath, Swarun and Jayaprakash B R
Quoting Sumanth Patlolla -
This happened much before Kinect. Identify.
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Sega Activator
The dude in 1 proposed 2 to explain something. Who is this dude? What are those funky curves known as?
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Quoting Anjul - This is Ptolemy who used these diagrams to explain the orbits of planets under his geocentric theory of the universe. Those funky curves are called deferents and epicycles.