M2 - Again! Again! Again!
Best shmup porters in the world! And this entry in their Toaplan Arcade Garage series is arguably the best one yet. Definitely my favourite! Two absolute classics with tons of extra modes, including Super Easy and Arcade Challenges, international PCBs (like the 2P one) and all the Gadgets and custom options you could ever want. Only downside is the lack of additional OSTs, which has been par for the T.A.G. series so far. Unfortunate, but... can't have it all, I guess.
Now, about this PS4 edition. For some reason, they've opted to include the console ports and bonus games as a DLC code and not on disc, which really sucks when you consider the Switch edition comes with everything on the cartridge. So, I have to ding one off my rating for that blunder. The good news is that, if you have a Japanese PSN account, the codes are easily redeemable and aren't strictly tied to the account. So, for example, if your JPN PSN account is activated on your console (and you've redeemed the DLC codes) and you switch back over to your EU/NA PSN account, the additional DLC games are fully playable using your EU/NA account.
For preservationists, the console ports aren't a huge loss if you're here for the main course--there's only one for Flying Shark and two regions of the same for Fire Shark, not nearly as many lost as in the CERO one for Kyukyoku Tiger. And both Teki-Paki and Wardner are more disposable curiosities than anything, though some might disagree. Disc is v1.00, final patch is v1.03. Patch notes are all in Japanese. All the important stuff in-game is in English, except manuals, options and instructions. If you have Limited Run's NTSC release of Kyukyoku Tiger, the English translations are all the same, basically, so just check there for translations if you need them. The games are easy to pick up and understand, so the lack of translation isn't as egregious as some of their more in-depth CAVE ports.
In short, these two shmup classics are incredibly important and highly replayable today, and M2's work has preserved them for a lifetime. In my opinion, Hishou Same! Same! Same! is (short-comings aside) an absolute must-have, even for the most strictly curated and discerning shelf. And no one who says they love the genre should be without it. Period.