Zone of Control

[Kamikaze28]

Let's go through the 'small' maps (with 1 Spawn Space):

• Sharkfood Island: The center line (symmetrical axis) has 6 spaces - I see how that is not possible to block entirely, but it only takes 4 units to form a wall from your base to those palm trees effectively directing your opponent to your Spawn Space, which is inherently easier to defend.
• Glitch: This map is a perfect example for choke points - the center line has 4 pits in it and only 5 spaces. The center can be blocked by 1 unit which is superbly defendable with Snipers (who can fire over pits).
• Peekaboo: Rather open map, but still - any of the two center lanes can be blocked by 2 units. The outer lanes are rarely used, but can be blocked by 1 unit each.
  

In conclusion: know how to make your surroundings fight for you.