For fast ranking in gaming niche (esp. product or review-based), I’ve seen this combo work:
Build a parasite post on a high authority site (like Medium, Quora, Reddit) targeting long-tail gaming keyword
Hit it with tier 2 links (Web 2.0 + blog comments)
In parallel, publish supporting articles on your main site with internal linking and optimized schema
If you’re open to some grey/blackhat tricks, expired domains + 301s or GSA blast to parasite pages can really speed things up.
Let me know your niche inside gaming — console, casino, mobile, eSports? I might be able to guide more.