Simon Clarke* · Firebird Software* +1*
Spiky Harold*

Where and when.
- 1986 · ZX Spectrum*
- Release date
- 1986*
- Date precision
- Year only*
- Platform
- ZX Spectrum*
- 1986 · Commodore Plus/4*
- Release date
- 1986*
- Date precision
- Year only*
- Platform
- Commodore Plus/4*
- 1986 · Atari 8-bit*
- Release date
- 1986*
- Date precision
- Year only*
- Platform
- Atari 8-bit*
- 1986 · Amstrad CPC*
- Release date
- 1986*
- Date precision
- Year only*
- Platform
- Amstrad CPC*
- 1986 · Commodore 64*
- Release date
- 1986*
- Date precision
- Year only*
- Platform
- Commodore 64*
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* Provisional data