Show HN: NES Contra (1987) port (ASM –> C and then C –> WebAssembly)
1 comments
- Points93
- Comments81
–Rank now
#14Peak rank
5Days on list
–Score · 7d
Oct 31, 2026First seen
On Hacker News
Based on vermiceli's annotated disassembly of Contra: https://github.com/vermiceli/nes-contra-us. Thanks for the great work. I ported it in two steps. First to C: the game logic is translated routine by routine from the 6502 assembly, and checked frame by frame against the original in the Mesen emulator. Then the C code to WebAssembly so it runs in the browser. The cherry on top: online multiplayer, so two players can play co-op over the internet. Source: https://github.com/epoyraz/nes-contra-us
- Points
- 93
- Comments
- 81
- Submitted by
- tevlon
- Posted
- Oct 31, 2026
- Site
- epoyraz.github.io
Story details from Hacker News ↗ · linked article on epoyraz.github.io.
Trending history
Show HN: NES Contra (1987) port (ASM –> C and then C –> WebAssembly) was first seen on Hacker News · Front page on Oct 31, 2026. Since then it has appeared in 113 checks on 5 different days, across 2 lists (Hacker News · Front page, Hacker News · Show HN · this week). Its best position was #14 of 30, reached on Nov 1, 04:07 UTC. It dropped off the list after Nov 7, 18:50 UTC.
Rank history
Position on Hacker News · Front page at every check (lower is better).
Last 14 days
Best rank per day (UTC).
21
14
Oct 26today
Metric history
Platform metric as reported by Hacker News.
Where it trended
| List | Best | Days | Checks | Last seen |
|---|---|---|---|---|
| Hacker News · Front page | #14 | 2 | 54 | |
| Hacker News · Show HN · this week | #16 | 3 | 59 |
From the discussion
A few top-level comments from Hacker News, shortened. Read the full thread on Hacker News.
Wow, the source 6502 assembly with comments is incredible: https://github.com/vermiceli/nes-contra-us/blob/main/src/ban... The whole thing (all banks) is more than 10,000 lines of assembly code. When I wrote assembly code for a university computer science course, it was hard to manage even 200 lines. I cannot imagine…
But the Japanese Contra was so much better! https://www.youtube.com/shorts/CiXzONyCDW0
Is the audio not supposed to work? I was hoping to hear the legendary tracks!
Featured in
Archived daily, weekly and monthly lists that include this entry.
Hacker News 2 days, best #14
Show HN Weekly 3 days, best #16
Questions
Is Show HN: NES Contra (1987) port (ASM –> C and then C –> WebAssembly) trending on Hacker News right now?
Not at the moment. It was last on the list on Nov 7, 18:50 UTC, after 5 days of trending.
What is the highest rank Show HN: NES Contra (1987) port (ASM –> C and then C –> WebAssembly) reached?
#14 on Hacker News · Front page, on Nov 1, 04:07 UTC. Trendoday checks this list every 15 minutes.
How long has Show HN: NES Contra (1987) port (ASM –> C and then C –> WebAssembly) been trending?
It was first seen on Oct 31, 2026 and has been on the list on 5 days (113 checks) since.
How much discussion did it get on Hacker News?
93 points and 81 comments; submitted by tevlon on Oct 31, 2026.