At the time of release, most scrolling shooters were about spaceships, so the idea of flying as a bee across meadows and ponds and fighting insects was refreshingly novel.
The game uses a similar power-up bar system to Gradius, allowing the player to select powers depending on how many flowers he collects from destroyed enemies.
This game contains examples of:
- Animate Inanimate Object: The sewer level has many of these — apparently Hexaae's magic works on non-living things as well. The second boss of the sewer level is a can of Pepsi-Cola.
- Asteroids Monster: One of the bosses is one, which makes less sense when you remember that it's a FISH.
- Bee Bee Gun: Hexaae attacks Ikuro's wife Yuri with bees, poisoning her. Also, the Final Boss's attack is him endlessly releasing insects at you.
- Bonus Level of Heaven: Literally (and making absolutely no sense for this game). You fly above heavenly clouds, catching angels and avoiding demons.
- Bonus Stage: Several, including one that you can enter during a boss battle.
- Chain Reaction Destruction: All large enemies die in a flurry of fiery explosions, especially bosses.
- Down the Drain: Level 3 takes place entirely inside a sewer.
- Exty Years from Now: The intro shows us events taking place in '19XX'.
- Fireballs: One of the heavy weapons used by insects.
- Flying Seafood Special: the first boss of the final boss rush is a fish, and yet it flies.
- Hammerspace: The bee has a build-up weapon similar to the wave cannon in R-Type: a biological rocket that is bigger than the bee is. Since the bee is magical, this can be forgiven, but it does look rather odd to see Ikuro firing the enormous missile.
- Insect Gender-Bender: If Ikuro is supposed to be a worker honeybee (as opposed to a drone), then it implies that he is in fact female for most of the game.
- Interface Spoiler: You can listen to most of the game's music on the menu screen, and there's one tune, 'Speed of Light', that could never be heard in game, but the position and style of it suggested that it had to be for a bonus level in the techno world. It was fifteen years later before someone hacked the game to find out where this bonus level was. Apparently a bug in the code may have stopped people getting into it.
- Murder Water: the sewer level has mutated water which tries to attack you.
- Mook Maker: The final boss is one. In fact, that's its only attack.
- Never Trust a Title: The game's title screen suggests that this game is called "Apidya II", which has led many people to wonder what the first Apidya game was. In fact, the "II" was supposed to be a joke. This is the first and only Apidya game.
- Off with His Head!: How Ikuro ultimately disposes of the Big Bad.
- One-Hit-Point Wonder: If you don't have a shield, Ikuro dies if anything hits him. Even if he hits scenery. This is likely due to shoot-em-up legacy of the time - spaceships in horizontally-scrolling shooters were always One Hit Point Wonders.
- Segmented Serpent: The eel boss is the most fitting example, since it moves around like a snake, but there are other segmented enemies: some odd pond animal with an extending jaw, and swinging electrical cables in the sewer level.
- Shout-Out: The whole fourth level is a shout-out to R-Type.
- Shown Their Work: The depictions of European insects and other animals are all accurate, and if you know your biology, you can identify them.
- Spider Tank: The first boss of the techno world, a giant, indestructible mecha-crab.
- Swallowed Whole: The pike boss can do this to you. Bizarrely, it's actually not a bad thing. In fact, entering the pike boss' mouth sends you to a Bonus Stage.
- Weaponized Offspring: This is the attack of the final boss, a giant hornet that keeps releasing bees at you.
- Womb Level: The giant pike's stomach, and the dead rat's stomach... or intestines?
- You Gotta Have Blue Hair: Ikuro has blue anime hair before his transformation, while Yuri's hair is green.
- Your Head A-Splode: happens to some of the larger enemies, such as the snail pictured above.