A new laboratory transforms the hospital’s upper floor from a simple expansion into a playground built around experimentation. The biggest addition is a potion system that starts with collecting patient samples, moves through sequencing and processing, and ends with effects that can shrink, recolor, disguise, ignite or otherwise alter characters. That loop gives the update far more to explore than a cosmetic refresh.
The walkthrough does a good job of discovering the mechanics in real time rather than presenting them as a sterile checklist. Testing combinations such as AAA, GGG, GAC and ACA creates a steady stream of surprises, including tiny patients, fish transformations, rainbow coloring, new hair and other strange effects. The trial-and-error format suits the game well because failed mixtures and unexpected results are often as entertaining as the successful ones.
There is also more environmental storytelling than the potion system initially suggests. Notes about hospital staff, a sealed-off subject named Squiggles, references to closed wards and a newspaper clipping all hint at a larger mystery behind the laboratory. Releasing Squiggles gives that thread a little momentum, although the video mostly treats the lore as something to react to rather than investigate in depth.
Several smaller discoveries help make the update feel dense. The shortcut between floors improves movement, anomaly samples appear to behave differently, hiders can provide multiple samples, and some mixtures create temporary player effects such as ghost-like movement or transformation into Squiggles. Those details give the exploration useful variety and make the second floor feel interconnected with the hospital’s existing systems rather than completely separate from them.
The presenter’s enthusiasm is a major part of the entertainment. Reactions to glowing patients, bizarre hairstyles, invisible characters and malfunctioning experiments keep the pace lively, and the repeated testing makes it easy to understand what many of the mixtures actually do. The willingness to revisit unclear combinations is also useful when the first attempt produces an ambiguous result.
That same spontaneity sometimes works against clarity. Mixture names and effects can become difficult to track as experiments are made rapidly, interrupted by patient handling, jokes, calls to like or subscribe, and social-media promotion. The promise to show every combination also feels slightly stronger than the final level of certainty, since several mixtures have unclear effects and the ending acknowledges that something may still have been missed.
Pros
- The sample, sequencing and potion mechanics are demonstrated through repeated hands-on testing rather than briefly summarized.
- A wide range of transformations gives the laboratory system genuine variety and encourages experimentation.
- Squiggles, the sealed laboratory material and hospital notices introduce an entertaining layer of environmental mystery.
- Small discoveries involving anomaly samples, hiders and shortcuts add useful depth beyond the headline features.
- Energetic reactions keep an extended sequence of similar experiments entertaining.
Cons
- Rapid switching between mixtures makes some potion combinations and their effects difficult to keep straight.
- Several experiments end without a clear explanation of what the mixture actually changed.
- Repeated engagement prompts and promotional interruptions occasionally break the flow of the exploration.
- The claim of covering every combination feels somewhat uncertain given the ambiguous results and closing invitation to report anything missed.
The laboratory expansion gives Animal Hospital an unusually playful update, with experimentation, hidden details and strange transformations providing much more than a new floor to visit. The exploration is enthusiastic and often genuinely informative, though clearer tracking of combinations and fewer interruptions would make it easier to use as a complete guide.




