Out of 3631 games less than 100 were NTSC releases. So thats roughly 2.8%
Wow, I'm on mobile right now and I can barely use that old school site. Not sure what I'm looking at, but it looks like a bunch of games, files and demos. I clicked on Mindscape for example, which was a US based publisher back then and all it talks about is the types of copy protection they used for their software.
Anyways, let's look at the Top 10 Commodore 64 games on Lemon 64.
1. Sams Journey - Modern Homebrew
2. Steel Ranger - Modern Homebrew
3. Zak McKraken and the Alien Mindbenders (Lucasfilm Games- American)
4. Maniac Mansion (Lucasfilm Games - American)
5. Pirates! (MicroProse - Sid Meier - American and my personal fav computer game from that era, the C64 was the base platform)
6. Sentinel Worlds I: Future Magic (old school sci-fi RPG, published by Electronic Arts but developed by Novotrade, so a mix of US and UK maybe. Novotrade did some football/soccer games, so I'm assuming they are UK)
7. Turrican II: The Final Fight (Rainbow Arts - UK)
8. Ghosts and Goblins Arcade - Modern Homebrew
9. Space Rogue (Sci-fi space sim/RPG - Origin - American)
10. IK+ (System 3 - UK)
Looking at the 11-20 spots, tons of RPGs by American devs and publishers like Origin and Electronic Arts. So as you can see, a bunch of American devs and publishers in the Top 20.
Link:
Complete list of the best Commodore 64 games ever made!
www.lemon64.com
From Wikipedia:
The C64 dominated the low-end computer market (except in the UK and Japan, lasting only about six months in Japan
[7]) for most of the later years of the 1980s.
[8] For a substantial period (1983–1986), the C64 had between 30% and 40% share of the US market and two million units sold per year,
[9] outselling
IBM PC compatibles,
Apple computers, and the
Atari 8-bit family of computers.
Here is some C64/128 sales data from internal documents from that time period.
1984 C64 units sold:
United States (US) - 832,400
Rest of World (ROW) - 1,616,300
1541 Disk Drives:
US - 714,600
ROW - 586,200
1985 C64 units sold:
US - 544,300
ROW - 811,000
1541 Disk Drives:
US - 527,100
ROW - 308,600
1985 C128 units sold:
US: 236, 600
ROW: 166,500
1571 Disk Drives:
US - 166,300
ROW - 56,500
Source: