MGS Delta All Kerotan Frog & GA-KO Duck Locations + Secret Easter Eggs

Nope.

I spent way too long figuring this out and honestly I still feel like there might be an even better way to do it that I just haven't stumbled across yet, but this approach got me through my no-alert run and that's what matters.

I spent three full playthroughs hunting down every last collectible in this game. Not because I'm a completionist, I just kept finding stuff I'd missed before and got annoyed at myself. And the UE5 remake didn't just port the old secrets, it added a few new ones that even MGS3 veterans won't expect. ## The 64 Kerotan Frogs, What They Actually Do

Nope.

The green frogs have been in MGS3 since the PS2 days, but in Delta they're rendered in full Unreal Engine 5 glory. They make a distinct croaking sound when you're close, crank your headphones up and listen for it. Shooting all 64 unlocks the stealth camouflage item, which makes you nearly invisible. Nearly. Enemies can still hear your footsteps and spot mud trails. I found the hardest ones are in the mountain areas. There's a frog tucked behind a rock formation in the Krasnogorje region that you can only hit by crawling to a very specific ledge and using the first-person view. I wasted about 20 minutes on that single frog because I was one pixel off on my aim. And the scoped tranquilizer pistol helps a lot for the long-range ones, by the way. A few frogs that tripped me up:

Rassvet ruins: Look up at the broken church tower, not at ground level. But the frog sits on a beam inside. Ponizovje warehouse: It's behind a stack of crates in the southwest corner. But you need to crawl under a gap to even see it. Groznyj Grad: There are three frogs in this area alone. The one on the rooftop requires you to climb the radio tower ladder first. Seriously. The game doesn't track which ones you've already shot, so keep your own list. I used a notepad app on my phone. Low tech, but it works. ## 64 GA-KO Ducks, The New Collectible

These little yellow rubber ducks are new to Delta. Unlike the frogs, they squeak instead of croak, and hitting all 64 unlocks a special camo pattern, the "GA-KO" uniform, which is honestly more of a novelty than practical. It makes squeaking sounds when you move, which is hilarious but not exactly stealthy. The ducks tend to be hidden in more absurd places than the frogs. I found one floating in a toilet. Another one was inside a locker that you can only open after interrogating a specific guard in the Groznyj Grad weapons lab. Interrogate everyone. Not kidding. It's tedious but that's how you find the weird stuff or whatever works.. ## Secret Theater, The Cutscene Viewer Nobody Talks About

Never again.

What I eventually realized after dying to this section about a dozen times is that the obvious approach the game seems to steer you toward is actually a trap, and the real solution involves using a mechanic the tutorial mentioned once and never brought up again.

After beating the game once, the Secret Theater unlocks from the main menu. It's not just a cutscene viewer, it's a collection of parody versions of key scenes, complete with alternate voice lines. The one where Snake's face model bugged out had me laughing out loud. Some of these parody scenes require specific conditions to unlock: beat The End non-lethally, complete certain missions under a time limit, stuff like that ...you know how it goes.. It works. ## Guy Savage Nightmare, It's Back

Seriously.

If you save the game while inside the prison cell at Groznyj Grad (after being captured) and then reload, there's a random chance you'll load into a completely different game, a hack-and-slash nightmare sequence called Guy Savage. It was in the original MGS3 and made it into Delta. You fight demonic enemies with a sword for about five minutes, then wake up back in your cell. It's completely unexplained and that's what makes it great. ## Snake vs. Monkey / Snake vs. Bomberman

The crossover minigames are still here but platform-dependent. PS5 and PC players get the classic Snake vs. Monkey mode (from the old Ape Escape crossover), while Xbox players get Snake vs. Bomberman. Both are separate from the main campaign and accessible from the main menu. Trust me on this one. Completing them unlocks bonus camo patterns for the main game. ## Radio Easter Eggs

Call your support team on the radio at weird moments and you'll get unique conversations. Call Para-Medic while wearing the zombie face paint. Call Sigint while hiding in a cardboard box in the rain. Call The Boss's frequency after she's... well, you know. These conversations are fully voiced and some of them are genuinely funny. One thing I noticed: the radio frequency for The Boss (141.80) still works after the story events. The conversation you get is quietly devastating. ## Photo Mode Secrets

Delta's photo mode has hidden filters and frames that unlock as you progress. There's a "Kojima Filter" that adds film grain and a sepia tone, it's named differently now but you'll know it when you see it. I learned this the hard way. Using it during the final boss fight creates some genuinely cinematic shots. Took me forever to figure out.

The Ocelot Unit Callback

After you beat the game, reload your cleared save. During the Virtuous Mission on NG+, call Major Zero on the radio immediately after the Ocelot unit ambush cutscene. There's a new line of dialogue referencing the events of the first playthrough that wasn't in the original MGS3. It's subtle. One line. But it's there.

This kind of detail is scattered throughout Delta. The developers clearly knew their audience included people who've played the original a dozen times and hid things specifically for them. The Kerotan frogs squeak differently in certain locations if you've already collected them on a previous save. The radio conversations have alternate dialogue trees on NG+. Even the item description text changes slightly for gear you carried over from a previous run.

The Time-Based Secrets

A few things in MGS Delta trigger based on your system clock:

If you play on December 25th, Para-Medic wishes Snake a Merry Christmas during her radio calls. On Snake's canonical birthday (revealed in later games but the date is recognized here), Sigint has special dialogue. On Halloween, the secret theater unlocks a special parody scene.

These are the kinds of secrets that 99% of players will never see because nobody thinks to mess with their system clock for a video game. But they're in there. Someone at Konami spent development time implementing Christmas radio dialogue for a character in a stealth game set in 1964. I love that this franchise exists.

The Hidden Credits Scene

After the post-credits scene (which you should absolutely watch if you haven't), wait on the title screen for about two minutes without pressing anything. A hidden credits roll starts. It's a different version from the one that plays after the ending, with behind-the-scenes photos and concept art from the UE5 development. Virtuos, the co-developer, gets their own section. It's a nice touch that acknowledges the remake was a collaboration.