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Large Levels Tech Demo – a Sonic 1 ROM Hack (Genesis) Romhack

Hack Name: Large Levels Tech Demo - a Sonic 1 ROM Hack
Released by:
Status: Complete
Patch Version: TD0110A
Last updated: January 10, 2023
Type of Hack: Bug Fix, Gameplay, Graphics, Levels, Other, SFX, Text
Downloads: 15

Large Levels Tech Demo is a ROM hack of Sonic the Hedgehog for the SEGA Mega Drive/Genesis. This ROM hack is a technical showcase of an enhanced engine, sporting changes that significantly increase the maximum level size of a Sonic 1 level. The singular level featured here, in fact, is 6 times the size of the biggest level that can be crafted within Sonic 1, under no engine-level modifications!

The hack features, among other things, an expanded moveset, including the following:

  • The Spin Dash, from Sonic 2, which works the same as usual;
  • The Drop Dash, from Sonic Mania, which was enhanced to allow the start of a new charge after one has been interrupted;
  • The Super Peel-Out, from Sonic CD, now enhanced with the chance to release it at any given time.

In addition, you'll find an experimental variation of the Extended Camera from Sonic CD, with the difference being that the camera will gradually reveal more of the level the faster you go.

To play Large Levels Tech Demo, you must apply the provided BPS patch on an unmodified Sonic the Hedgehog REV01 ROM. If you have purchased the Sonic 1 ROM from Steam prior to its delisting, that will work just fine.

Filename: Sonic The Hedgehog.bin
CRC-32: afe05eee
SHA-1: 69e102855d4389c3fd1a8f3dc7d193f8eee5fe5b
Project Lead: Giovanni
Level design and Programming: Giovanni
Additional playtesting: fuzzybit

Additional code:
MarkeyJester (Deformation engine, guides)
Mercury (ReadySonic, guides)
Devon (Listed in game as "FAITH") (R11A Disassembly, Guides)
Cinossu, GenesisDoes, Lightning, kram1024, Puto, shobiz, warr1or2, RandomName (Guides)
ProjectFM (S3K Object and Ring Managers port)

Additional artwork:
Rosabelle and others (Sonic 1: Expanded Sprite Sheet)
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