It is a free-to-play game but does have a pay feature that gives added perks.
This game provides examples of:
- Allegedly Free Game: Downplayed. It's free to play and most features are readily available, but one has to buy credits with real money at least once in order to gain access to some extra features such as various genes and gender splicing, sending credits to others (placed as a countermeasure against funneling start-up credits from multiple accounts), and researching species that the player doesn't currently own as well as top tier of research for each species.
- Amazing Technicolor Wildlife: Pets can come in any color possible on the RGB color wheel via generation or breeding - there are even some colors which will give the pet a little badge should it bear one of them (such as pure colors and gemstone colors).
- Animal Facial Hair: The Lepus have a mutation that looks like a mustache.
- April Fools' Day: There are special mutations for April Fools.
- Catus, Equus, Lotor, Macropus, Porcus, Taurus and Vulpes get mutations that give them missing body parts.
- Gallus, Lupus, Rattus and Serpentes get glitch-themed mutations.
- Art Evolution: Some newer species look much more neat and have a more consistent style compared to species like the Feline.
- Asian Fox Spirit: The Lupus, Catus, Hyaena, and Vulpes have kitsune-esque mutations.
- Bunnies for Cuteness: Lepus are a species based on bunnies.
- Call a Rabbit a "Smeerp": All the species have fancy latinesque species names, with the exception of Slime (which is directly from English) and Loong (which is derived from Chinese instead).
- Cheap Gold Coins: Despite the ability to purchase credits with real world money, it is incredibly easy to accumulate them by turning other players' eggs.
- Cooldown: All species have a short cooldown time before they can breed again. However, this only applies to the females.
- Cool Horse: You can breed horses with frozen, mist or flaming manes and tails, plus horses with dragon mutations.
- Concealed Customization: It's possible to use tattoos to hide colors on a pet.
- Crazy Cat Lady: You can easily become one, and you'll see many players with pages upon pages of pets. There's no limit to how many pets one can have.
- Creature-Breeding Mechanic: The game's central focus is breeding various animals to achieve different colorations and mutations.
- Cute Slime Mook: One of the available species of pets are Slimes, which are simple blob-like creatures (although mutations can make their appearances more complex).
- A Dog Named "Dog": It is extremely common to find pets for adoption named after their species.
- Emoticon: Typing <3 will turn into a heart. Typing :) will turn into a smiley face.
- Everything's Better with Rainbows: The Lupus can have a rainbow paintbrush tail. The Equus also has certain exclusive mutations that give them rainbows on their bodies.
- Exactly What It Says on the Tin: OviPets quite literally means "Egg Pets".
- Friendly, Playful Dolphin: The Cetacea, which look just like dolphins. Unless they receive shark mutations.
- Gem-Encrusted: The Catus, Equus, and Slime can have gemstone eyes.
- The "Jewel" mutation gives Rattus a jewel on their forehead.
- Glowing Eyes: A possible mutation for the Draconis and Vulpes.
- Additionally, the Hyaena mutation "Archangel Eyes" and the Serpentes mutation "Polar Light Eyes" also give the pet glowing eyes.
- Hellish Horse: Possible with several of the Equus mutations.
- Last of His Kind: Ovi, the only remaining member of the Ovus species, the game’s beta period species. Sadly he’s been sterilized, meaning that even if a female is found, he can’t breed.
- The Marvelous Deer: Rangifers, especially if they have the mutations that give full neck fur and various types of antlers.
- Microtransactions: Users can purchase credits.
- Mix-and-Match Critters: The mutations allow this. You can have a lizard that looks entirely like a platypus, an eagle with butterfly wings, a chicken with pigeon mutations, a dolphin that looks like either a shark or a seahorse, or a wolf with a cat head and tail to name a few.
- Money Sink: Projects take a LOT of credits, especially since you have to account for gender fails.
- Noble Wolf: The Lupus are based on wolves and are also gentle and caring according to their description.
- Our Dragons Are Different: Unlike most other species which are based on real-world animals, Draconis and Loong are based on dragons.
- Our Fairies Are Different: Some species can have fairy wings as a mutation.
- Our Gryphons Are Different: Unlike most other species which are based on real-world animals, Gryphus are based on griffins.
- Panthera Awesome: The Feline species, which is based on big cats and can also receive mutations from the same (such as a saber-tooth cat head).
- Pegasus: There are mutations that give Equus wings.
- The Ovis species, which is based on sheep, can have wing mutations as well as pony mutations, so an Ovis with wings and pony mutations would technically also fall into this category.
- The Phoenix: There are phoenix mutations for the Avi.
- Phonýmon: The Bloom Ears mutation for the Ericius is very reminiscent of Shaymin.
- There are certain projects involving pets that were intentionally made to resemble Pokémon.
- Planimal: Many species have mutations that invoke this trope.
- Player-Generated Economy: Much of the game's economy is done through the buying and selling of rare pets.
- Play Every Day: Logging in every day gets you a credit bonus at the end of the week.
- Raptor Attack: The Raptor species, which is based on predatory dinosaurs.
- Ridiculously Cute Critter: So. Many.
- Temporary Online Content: There are several time limited species and mutations.
- Unicorn: The Equus can have a horn.
- Unlockable Content: Owning a species unlocks the ability to research that species. And researching that species unlocks the ability to generate that species.
- Video Game Cruelty Potential: Pets belonging to players that don't have Ovi+ subscription can starve and die. Some players intentionally let pets die when unwanted or if they don’t want to care for them but want the option to revive them for use later on.
- Whale Egg: All of the pets hatch from eggs, even the mammals.
- Winged Unicorn: Possible with the wings and unicorn horn mutations on Equus.
