Sandwich Runner, developed by 株式会社ドワンゴ, presents a novel twist on the endless runner genre by incorporating food-based mechanics and reaction-based scoring. The Android title distinguishes itself through its sandwich-building premise, where players navigate a character collecting various ingredients while avoiding obstacles, with the final sandwich composition determining the end-level character reaction. The core gameplay involves horizontal running mechanics where players swipe to change lanes and collect falling ingredients. Each ingredient type carries different properties - standard items like lettuce and tomatoes contribute to sandwich height, while special items like red peppers trigger unique animations where characters breathe fire. Rotten ingredients introduce negative consequences, causing characters to become sick upon consumption. The game employs a progressive difficulty system where running speed increases with distance, and ingredient frequency varies based on performance metrics. User interface design employs bright, cartoonish graphics with clear visual indicators for ingredient types and obstacle warnings. The control scheme utilizes simple swipe gestures for lane changes, making it accessible for casual players. Performance analysis indicates stable frame rates across mid-range Android devices, with loading times averaging under three seconds between runs. The advertisement implementation uses a non-intrusive model where ads appear primarily between games, with optional rewarded videos for continue opportunities. User feedback trends show consistently positive ratings, with the current 4.2-star average reflecting satisfaction with performance and ad implementation. Multiple reviews from Matilda Stark on May 17, 2025, highlight smooth performance and minimal advertising interruptions, noting that 'they give you a warning when there are ads' and describing minimal lag issues. These reviews consistently praise the game's visual elements, particularly the '5 stars sparkles' effects accompanying high-value ingredients. The game demonstrates strengths in its unique theme execution and optimized performance, though limitations include relatively shallow long-term progression systems and repetitive visual environments. Ideal for short gaming sessions, Sandwich Runner succeeds as a casual distraction with its novel reaction-based scoring system, though hardcore gamers may find the mechanics insufficiently complex for extended engagement. The title represents a competent execution of the endless runner formula with distinctive food-themed mechanics that differentiate it within a crowded market segment.