SNK Details METAL SLUG Ultimate Collection And Its Recovered Location Test Build
The interview confirms the collection was built around M2's porting work and a numbering-first selection rule, with METAL SLUG XX left out because METAL SLUG 7 came first.
Reporting from 1 source: Game Spark.
SNK producers discussed METAL SLUG ULTIMATE COLLECTION in a Game Spark interview, covering the project's origin with developer M2, the decision to include every numbered entry plus METAL SLUG ADVANCE, and a location test version of the original game that staff found while searching past data. The collection adds quick save, rewind, online co-op, and score attack. METAL SLUG 7 was prioritized over METAL SLUG XX.
Producer Shiro Muto said the project began with talks between his supervisor and M2 about working together, before any specific title was chosen. The 30th anniversary gave the pair a reason to move. M2 handled development, following its work on classic game ports.
The selection rule was to include every numbered entry. METAL SLUG ADVANCE went in because it had not been ported to current hardware. METAL SLUG XX was left out: Muto said METAL SLUG 7, which he wanted in the set, took priority, and XX is a kind of remake of 7.
Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.