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Extended Levels Classic

Have you ever planned the perfect kill box, only to find that you've reached the final wave and cannot make it quite as spectacular as you'd hoped?
Wouldn't you love to keep going, to keep building?
Now you can with the Extended Levels Classic mod!

As with Extended levels, the Extended levels Classic adds a few more rounds to the Classic stages.

Extended Levels doesn't change anything about the existing waves, it only adds additional waves of enemies, throwing more and more at you. It tries to keep up the same intensity so that it feels like a natural extension of the original game.
It also doesn't add any additional enemy types. You will face the same enemies that you would in the original stage.

What you get:

Twin Halls (was 9 now 16 waves)
Lunch Break (was 9 now 16 waves)
Sludge Hole (was 8 now 16 waves)
Chaos Chamber (was 9 now 15 waves)
The Arena (was 10 now 16 waves)
The Library (was 10 now 15 waves)
Hard Climb (was 13 now 17 waves)
The Squeeze (was 12 now 17 waves)
Stairs of Doom (was 12 now 18 waves)
Finale (was 12 now 16 waves)

Due to the smaller size of the stages and the smaller enemy waves, Extended levels classic stages take an average of around 25 minutes to complete.