There is total of 20 levels in Spacious Snake. Here is a 100% guide on how to go through all levels.
Spacious Snake All Levels Guide
Level 1
Level 2
Level 3
Level 4
Level 5
Level 6
Level 7
Level 8
Level 9
Level 10
Level 11
Level 12
Level 13
Level 14
Level 15
Level 16
Level 17
Level 18
Level 19
