Photo and sound credits

Thank you to the photographers. Photos used under the Unsplash License and the Pixabay Content License. Numbers are level numbers.

Winter

1. Photo by Andre Benz on Unsplash
2. Photo by silviarita on Pixabay
3. Photo by Babelphotography on Pixabay
4. Photo by Andre Benz on Unsplash
5. Photo by Kookay on Pixabay
6. Photo by Zef51 on Pixabay
7. Photo by Dusan_Cvetanovic on Pixabay
8. Photo by Dmitry Sumin on Unsplash
9. Photo by JillWellington on Pixabay
10. Photo by ivabalk on Pixabay
11. Photo by Monika Grabkowska on Unsplash
12. Photo by Patrick Robert Doyle on Unsplash
13. Photo by congerdesign on Pixabay
14. Photo by OurWhiskyFoundation on Pixabay
15. Photo by Lydia Norstad on Unsplash
16. Photo by Till Daling on Unsplash
17. Photo by captainsinnop on Pixabay
18. Photo by simple on Pixabay
19. Photo by American Heritage Chocolate on Unsplash
20. Photo by William Zhang on Unsplash
21. Photo by congerdesign on Pixabay
22. Photo by KinEnriquez on Pixabay
23. Photo by Valentin Petkov on Unsplash
24. Photo by Diliara Garifullina on Unsplash
25. Photo by ShenXin on Pixabay
26. Photo by AlainAudet on Pixabay
27. Photo by Lachlan Gowen on Unsplash
28. Photo by issa momani on Unsplash
29. Photo by JillWellington on Pixabay
30. Photo by Vladvictoria on Pixabay
31. Photo by Raúl Cacho Oses on Unsplash
32. Photo by Jeremy Hynes on Unsplash
33. Photo by TerriC on Pixabay
34. Photo by suju-foto on Pixabay
35. Photo by Clay Banks on Unsplash
36. Photo by Albertfotofilms on Pixabay
37. Photo by buffetcrush on Pixabay
38. Photo by Couleur on Pixabay
39. Photo by JStolp on Pixabay
40. Photo by Peaktural_photo on Pixabay
41. Photo by anvel on Pixabay
42. Photo by ykaiavu on Pixabay
43. Photo by moremilu on Pixabay
44. Photo by C1ri on Pixabay
45. Photo by ChiemSeherin on Pixabay
46. Photo by Leonhard_Niederwimmer on Pixabay
47. Photo by geralt on Pixabay
48. Photo by StockSnap on Pixabay
49. Photo by Irina_kukuts on Pixabay
50. Photo by ahmetyuksek on Pixabay

Spring

1. Photo by Pexels on Pixabay
2. Photo by Kirgiz03 on Pixabay
3. Photo by NoName_13 on Pixabay
4. Photo by Anthony DELANOIX on Unsplash
5. Photo by MabelAmber on Pixabay
6. Photo by InesGil on Pixabay
7. Photo by Stanly8853 on Pixabay
8. Photo by Catalina Fedorova on Unsplash
9. Photo by Olichel on Pixabay
10. Photo by Couleur on Pixabay
11. Photo by Arno Smit on Unsplash
12. Photo by Bianka Csenki on Unsplash
13. Photo by NoName_13 on Pixabay
14. Photo by 139904 on Pixabay
15. Photo by Jamie Davies on Unsplash
16. Photo by Dmitry Vechorko on Unsplash
17. Photo by edmondlafoto on Pixabay
18. Photo by Pedro_Torres on Pixabay
19. Photo by Jenna Neal on Unsplash
20. Photo by Monika Grabkowska on Unsplash
21. Photo by Alexas_Fotos on Pixabay
22. Photo by hudsoncrafted on Pixabay
23. Photo by Atul Vinayak on Unsplash
24. Photo by Zhaoli JIN on Unsplash
25. Photo by Melissa197 on Pixabay
26. Photo by fab_photos on Pixabay
27. Photo by Sabrina Mazzeo on Unsplash
28. Photo by Ronni Kurtz on Unsplash
29. Photo by NoName_13 on Pixabay
30. Photo by millionairemob on Pixabay
31. Photo by Krists Luhaers on Unsplash
32. Photo by Timo Wielink on Unsplash
33. Photo by ChiemSeherin on Pixabay
34. Photo by Nennieinszweidrei on Pixabay
35. Photo by 🇸🇮 Janko Ferlič on Unsplash
36. Photo by Avinash Murugappan on Unsplash
37. Photo by pierre9x6 on Pixabay
38. Photo by Rianne_SchillerMclean on Pixabay
39. Photo by Andy He on Unsplash
40. Photo by Amber Kipp on Unsplash
41. Photo by TheUjulala on Pixabay
42. Photo by 12202549 on Pixabay
43. Photo by Paul Hanaoka on Unsplash
44. Photo by Grillot edouard on Unsplash
45. Photo by Leonhard_Niederwimmer on Pixabay
46. Photo by pierre9x6 on Pixabay
47. Photo by Syawish Rehman on Unsplash
48. Photo by Mikhail Vasilyev on Unsplash
49. Photo by MARTINOPHUC on Pixabay
50. Photo by Jacob-Medien on Pixabay

Summer

1. Photo by MARTINOPHUC on Pixabay
2. Photo by SeminPaek on Pixabay
3. Photo by RitaE on Pixabay
4. Photo by Brooke Lark on Unsplash
5. Photo by nouveaumonde34 on Pixabay
6. Photo by anngadpandey on Pixabay
7. Photo by oleg_mit on Pixabay
8. Photo by H Fall on Unsplash
9. Photo by 5116225 on Pixabay
10. Photo by Kookay on Pixabay
11. Photo by Mathew Schwartz on Unsplash
12. Photo by Will Truettner on Unsplash
13. Photo by allybally4b on Pixabay
14. Photo by varsbergsrolands on Pixabay
15. Photo by Ryan Spencer on Unsplash
16. Photo by Damiano Baschiera on Unsplash
17. Photo by LePeiVisual on Pixabay
18. Photo by silviarita on Pixabay
19. Photo by Luca Bravo on Unsplash
20. Photo by Thom Milkovic on Unsplash
21. Photo by paulohabreuf on Pixabay
22. Photo by Leonhard_Niederwimmer on Pixabay
23. Photo by Tomáš Nožina on Unsplash
24. Photo by Valdemaras D. on Unsplash
25. Photo by Ronile on Pixabay
26. Photo by Leonhard_Niederwimmer on Pixabay
27. Photo by Saud Edum on Unsplash
28. Photo by Ryan Spencer on Unsplash
29. Photo by Michelle-Maria on Pixabay
30. Photo by dominickvietor on Pixabay
31. Photo by ian dooley on Unsplash
32. Photo by Eric Ward on Unsplash
33. Photo by Sushuti on Pixabay
34. Photo by FabrizioPonchia on Pixabay
35. Photo by suyashdixit on Pixabay
36. Photo by JerOme82 on Pixabay
37. Photo by Patrice_Audet on Pixabay
38. Photo by garten-gg on Pixabay
39. Photo by kerdkanno on Pixabay
40. Photo by udayteja7770 on Pixabay
41. Photo by Couleur on Pixabay
42. Photo by Palmeris on Pixabay
43. Photo by wagrati_photo on Pixabay
44. Photo by France58 on Pixabay
45. Photo by NoName_13 on Pixabay
46. Photo by crispy-fotografie on Pixabay
47. Photo by Whistofino on Pixabay
48. Photo by Veronika_Andrews on Pixabay
49. Photo by Pat_Photographies on Pixabay
50. Photo by fietzfotos on Pixabay

Fall

1. Photo by qgadrian on Pixabay
2. Photo by 3888952 on Pixabay
3. Photo by JodesJ on Pixabay
4. Photo by Harry Gillen on Unsplash
5. Photo by smuldur on Pixabay
6. Photo by Couleur on Pixabay
7. Photo by Tama66 on Pixabay
8. Photo by Frank Luca on Unsplash
9. Photo by JillWellington on Pixabay
10. Photo by mland31 on Pixabay
11. Photo by Sarah Brown on Unsplash
12. Photo by Igor Oliyarnik on Unsplash
13. Photo by brigachtal on Pixabay
14. Photo by TheoRivierenlaan on Pixabay
15. Photo by Anna Claire Schellenberg on Unsplash
16. Photo by Alex Belogub on Unsplash
17. Photo by Einladung_zum_Essen on Pixabay
18. Photo by lino9999 on Pixabay
19. Photo by simon on Unsplash
20. Photo by Sugden Guy sugden on Unsplash
21. Photo by analogicus on Pixabay
22. Photo by PublicDomainPictures on Pixabay
23. Photo by João Marcelo Martins on Unsplash
24. Photo by Timothée Geenens on Unsplash
25. Photo by juergen-polle on Pixabay
26. Photo by wiggijo on Pixabay
27. Photo by Matthieu Joannon on Unsplash
28. Photo by Samuel Berner on Unsplash
29. Photo by Sunriseforever on Pixabay
30. Photo by Trek_Jason on Pixabay
31. Photo by Yusheng Deng on Unsplash
32. Photo by Martin Sanchez on Unsplash
33. Photo by schliff on Pixabay
34. Photo by Charlottees on Pixabay
35. Photo by Rocky Xiong on Unsplash
36. Photo by Nicolas Caetano on Unsplash
37. Photo by megspl on Pixabay
38. Photo by ValeriiIavtushenko on Pixabay
39. Photo by Cate Bligh on Unsplash
40. Photo by Süheyl Burak on Unsplash
41. Photo by juergen-polle on Pixabay
42. Photo by costelbcc on Pixabay
43. Photo by Vicjo on Pixabay
44. Photo by Michelle-Maria on Pixabay
45. Photo by Pexels on Pixabay
46. Photo by Julius_Silver on Pixabay
47. Photo by Alpcem on Pixabay
48. Photo by niekverlaan on Pixabay
49. Photo by Oldiefan on Pixabay
50. Photo by Jmtd on Pixabay

Halloween

1. Photo by Alexas_Fotos on Pixabay
2. Photo by RebaSpike on Pixabay
3. Photo by silviarita on Pixabay
4. Photo by Behnam Norouzi on Unsplash
5. Photo by Alexas_Fotos on Pixabay
6. Photo by Ylanite on Pixabay
7. Photo by Pamjpat on Pixabay
8. Photo by Bee Felten-Leidel on Unsplash
9. Photo by GregMontani on Pixabay
10. Photo by JillWellington on Pixabay
11. Photo by Nathan Riley on Unsplash
12. Photo by Quilia on Unsplash
13. Photo by Couleur on Pixabay
14. Photo by gadgemayur on Pixabay
15. Photo by Steven Aguilar on Unsplash
16. Photo by Priscilla Du Preez 🇨🇦 on Unsplash
17. Photo by brenkee on Pixabay
18. Photo by JillWellington on Pixabay
19. Photo by Priscilla Du Preez 🇨🇦 on Unsplash
20. Photo by Nick Fewings on Unsplash

Sounds

• Effects: Interface Sounds by Kenney (CC0)
• Winter: Fireplace Fire Crackling Loop by SoundsForYou
• Spring: Forest ambience, morning spring by AudioPapkin
• Summer: Ocean Sea Soft Waves by SoundsForYou
• Fall: Calming Rain Loop by DRAGON-STUDIO
• Halloween: Spooky Wind by freesound_community
• Music: Piano Relaxing by AtlasAudio

Sounds on Pixabay are used under the Pixabay Content License.