4 added 5 characters in body
source | link

Is the answer

www.roblox.com?

See Wikipedia or the site itself for why this fits the clues: people use it to play and develop games (development "using a sandboxed edition of Lua 5.1"), and many users are signed up to it.

people use it to play and develop games (development "using a sandboxed edition of Lua 5.1"), and many users are signed up to it.

Is the answer

www.roblox.com?

See Wikipedia or the site itself for why this fits the clues: people use it to play and develop games (development "using a sandboxed edition of Lua 5.1"), and many users are signed up to it.

Is the answer

www.roblox.com

See Wikipedia or the site itself for why this fits the clues:

people use it to play and develop games (development "using a sandboxed edition of Lua 5.1"), and many users are signed up to it.

3 added 4 characters in body
source | link

Is the answer

www.roblox.com?

See Wikipedia or the site itself for why this fits the clues: people use it to play and develop games (development "using a sandboxed edition of Lua 5.1"), and many users are signed up to it.

(I got this answer by just looking at the OP's user profile page!)

Is the answer

www.roblox.com?

See Wikipedia or the site itself for why this fits the clues: people use it to play and develop games (development "using a sandboxed edition of Lua 5.1"), and many users are signed up to it.

(I got this answer by just looking at the OP's user profile page!)

Is the answer

www.roblox.com?

See Wikipedia or the site itself for why this fits the clues: people use it to play and develop games (development "using a sandboxed edition of Lua 5.1"), and many users are signed up to it.

2 added 262 characters in body
source | link

Is the answer

www.roblox.com?

For explanationSee Wikipedia or the site itself for why this fits the clues: people use it to play and develop games (development "using a sandboxed edition of Lua 5.1"), and many users are signed up to it.

(I got this answer by just looklooking at the OP's user profile page!)

the OP's user profile page.

Is the answer

www.roblox.com?

For explanation, just look at

the OP's user profile page.

Is the answer

www.roblox.com?

See Wikipedia or the site itself for why this fits the clues: people use it to play and develop games (development "using a sandboxed edition of Lua 5.1"), and many users are signed up to it.

(I got this answer by just looking at the OP's user profile page!)

1
source | link