Yes, subgames do count as games for purposes of "the next game played" cards
Beyond carrying Start you engines
I fully expect the price on nonfoil uncommon FCAs to drop dramatically over time, rares and mythics will still be hard to pull but there will be a fair amount more of the nonfoils out there, thanks to the Play Boosters
Main among them is the new Book Cover series that gives cards like Bard, King of Dale
The included cards, hailing from a variety of historic expansions, appear below alongside how likely they are to be discovered in their respective slots: Imposter of the Sixth Pride (50%), Enduring Sliver (50%), Sentinel Sliver (50%) Irregular Cohort (100%) King of the Pride (50%), Dregscape Sliver (25%), Throatseeker (25%) Graveshifter (100%) Venomous Changeling (50%), Faceless Agent (50%) Changeling Outcast (75%), Universal Automation (25%) Etchings of the Chosen (100%) Thwart the Grave (50%), Allied Assault (25%), Birthing Boughs (25%) Davriel's Withering (67%), Dire Fleet Poisoner (33%) Blade Splicer (100%) Deadly Alliance (50%), Journey to Oblivion (50%) Cycling Land (100%) Historic Horizons is the follow-up to the popular Jumpstart set released for Magic: The Gathering Arena in 2020
For clarity, Ive circled both the set symbol, and the cards C code, in the photo above